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

1,1

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.

All terms appear to belong to A001359 (n>1). - Bill McEachen, Feb 09 2026

Links

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

Crossrefs

Cf. A166133, A256403-A256409, A001359.

Sequence in context: A316890 A143659 A282700 * A174367 A262650 A123100

Adjacent sequences: A256407 A256408 A256409 * A256411 A256412 A256413

Keyword

nonn

Author

N. J. A. Sloane, Apr 03 2015

Status

approved