A091826 (1/p)*(1+A000254(p)-p) as p runs through the primes.

1, 3, 54, 1866, 10958530, 1523289156, 71965034739952, 22713955095665178, 4197346376195350706086, 1207862068271027767810096022068, 1068238305254443248937595170683870, 1562962037194040089900589886917581740972972, 3510829028264238204864812583698673210331036097560

Offset

1,2

Links

Amiram Eldar, Table of n, a(n) for n = 1..87

Maple

a:= n-> (p-> (1+abs(Stirling1(p+1, 2))-p)/p)(ithprime(n)):
seq(a(n), n=1..14);  # Alois P. Heinz, Feb 27 2023

Mathematica

f[n_] := Abs[StirlingS1[n + 1, 2]] - n + 1; Table[f[p]/p, {p, Prime[Range[13]]}] (* Amiram Eldar, Apr 25 2025 *)

Crossrefs

Cf. A000040, A000254.

Sequence in context: A266523 A157550 A224368 * A392940 A091796 A171213

Adjacent sequences: A091823 A091824 A091825 * A091827 A091828 A091829

Keyword

nonn

Author

Benoit Cloitre, Mar 09 2004

Status

approved