A358619 First forward difference of A258037.

1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2

Offset

1,3

Comments

Conjecture: All terms belong to {1, 2, 3}. See third comment in A258037.

Links

Table of n, a(n) for n=1..102.

Mathematica

nn = 210; p = Prime@ Range@ nn; t = Table[ Differences[p, n][[1]], {n, 0, nn - 1}]; s = Select[ Range@ nn, t[[#]] > 0 &]; d = Differences@ s

Crossrefs

Cf. A258037, A358618.

Sequence in context: A270969 A361338 A241927 * A297033 A342227 A194318

Adjacent sequences: A358616 A358617 A358618 * A358620 A358621 A358622

Keyword

easy,nonn

Author

Clark Kimberling and Robert G. Wilson v, Oct 31 2022

Status

approved