Numbers n such that 2^(2*n)-1 = 63 (mod 3*(n+2)), 2^(n-1) == 1(mod n) and n == 6 (mod 7)
83, 293, 503, 1553, 2393, 3863, 4283, 4703, 6803, 7433, 7853, 9533, 9743, 11213, 12893, 13103, 13313, 14783, 15413, 16253
in OEIS add A173654
all elements satisfy the condition.
A141570 Primes of the form 2*3*5*7*n+83.
Our sequence is a subsequence for A141570
please help me find a pseudo-prime element of my sequence
ps verified for n<5*10^8
ps2 768440063
topic can be removed