20210519, 16:05  #67  
"Garambois JeanLuc"
Oct 2011
France
2^{7}·5 Posts 
Quote:
I did the same manipulation as you for the prime number 269, with regina_file until 5e6. Result : 13 even sequences found ! Code:
Data available for sequences 2 through 5000000 Sequence endings  prime: 3876810, cycle: 78879, open: 1044310 Enter sequence (##/a/h/p/p##/q/u): 45987 45987 terminates with prime 269. List all sequences that terminate with 269? (y/n/c/f): c 3684 sequences found. Perform Advanced Filtering on these results? (y/n): y Advanced Routine using previous results Sequence filter a (mod b) (a b): 2 Sequence range (begin end): All, Prime, Open, Cylce (a/p/o/c): Range for number of iterations (min max): Range for number of relative minimums (min max): Range for number of relative maximums (min max): Range for number of parity changes (min max): Range for number of consecutive even abundant terms (min max): Range for number of consecutive even deficient terms (min max): Range for number of consecutive odd deficient terms (min max): Range for number of consecutive odd abundant terms (min max): Range for number of downdriver extracts (min max): Range for smallest quotient of two consecutive terms (min max): Range for largest quotient of two consecutive terms (min max): Range for arith mean of all quotients of 2 consequtive terms (min max): Range for geo mean of all quotients of 2 consequtive terms (min max): Range for arith mean of # of digits of all the mins (min max): Range for arith mean of # of digits of all the maxes (min max): List filtered sequences for 0 (mod 2) from 2 through 5000000? (y/n/c/f): y 2888 436140 571804 628892 745148 887364 1143602 1216800 1252450 2876416 3476924 3511876 3969836 13 sequences found. Enter sequence (##/a/h/p/p##/q/u): 

20210519, 17:33  #68 
"Ed Hall"
Dec 2009
Adirondack Mtns
7372_{8} Posts 
Thanks! I find it interesting that such a large gap exists between the first and second sequence in the final list.
I also see I've still got some spelling errors that I thought I had fixed. Let me know of any you may find. More later. . . 
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