A256410 Subtract 1 from the terms of A256407.

2, 197, 269, 521, 569, 599, 821, 881, 1061, 1949, 2129, 2267, 2309, 2591, 2969, 3167, 5021, 5501, 6701, 7349, 9437, 10037, 10427, 10499, 14009, 14561, 15287, 16649, 17027, 17957, 18059, 18521, 19697, 19889, 20549, 20717, 20771, 22157, 22637, 23057, 23561, 24107, 25169

Offset: 1

Author

N. J. A. Sloane, Apr 03 2015

Keywords

• nonn

Comments

Conjectured to be always a prime. But which primes are these? It would be nice to know of some other property that distinguishes these primes. See also the "blog" in A166133.

Links

• Ray Chandler, Table of n, a(n) for n = 1..3258

Crossrefs

Cf. A166133, A256403-A256409.