A354537 Numbers k that are not Mersenne primes (A000668) such that 2*k is in A354525.

1, 511, 147573952589676412927, 174224571863520493293247799005065324265471

Offset: 1

Author

Jianing Song, Aug 17 2022

Keywords

• nonn
• hard

Comments

Terms in A354536 that are not Mersenne primes. Note that all Mersenne primes are in A354536.

a(5) = 2^727 - 1 is too large to include here. - Jinyuan Wang, Jan 21 2025

Examples

			See A354532.
		

Crossrefs

Cf. A000668, A354525, A354532, A354534, A354536.

Programs

PARI

lista(nn,{lim=256},{lim_p=1<<32}) = for(n=1, nn, if(isA354532(n,lim,lim_p), print1(2^n-1, ", "))) \\ See A354532 for the function isA354532

Formula

By definition, equals A354536 \ A000668.

a(n) = 2^A354532(n) - 1 = A354534(n)/2.