A153256 a(n) = A000041(n!!).

1, 1, 2, 3, 22, 176, 147273, 342325709, 2484305294265418180, 2649985308251720770267133439311, 40227894800233888265001294259207727216883218295926358088223368703

Offset

0,3

Links

Table of n, a(n) for n=0..10.

Formula

a(n) = A000041(A006882(n)).

Mathematica

a[n_]:=PartitionsP[n!! ]; lst={}; Do[AppendTo[lst, a[n]], {n, 0, 13}]; lst

Crossrefs

Cf. A000041, A006882, A101295.

Sequence in context: A166122 A366405 A114996 * A137077 A046965 A119679

Adjacent sequences: A153253 A153254 A153255 * A153257 A153258 A153259

Keyword

nonn

Author

Vladimir Joseph Stephan Orlovsky, Dec 22 2008

Extensions

Edited by N. J. A. Sloane, Dec 30 2008

Offset corrected by Alois P. Heinz, Mar 20 2023

Status

approved