Tetraproths
What is missing in this sequence: 8, 12, 16, ...
Define a tetraproth as 4 primes (k*2^n1, k*2^n+1, 2^nk, 2^n+k).
An example with 528 and 501 digits:
n = 1662, k = 928985771563090201572026415
Found with prp testing by PrimeForm which also proved k*2^n+/1.
Marcel Martin's Primo proved 2^n+/k.
