A012001 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A012001 as a simple table

n	a(n)
0	0
1	1
2	2
3	46
4	1112
5	55816
6	3804272
7	372397936
8	47682319232
9	7841034902656
10	1601250315636992
11	398250217200414976
12	118406090377889303552
13	41478295178427681104896
14	16904918898000336224294912

[0,1,2,46,1112,55816,3804272,372397936, 47682319232,7841034902656,1601250315636992, 398250217200414976,118406090377889303552, 41478295178427681104896, 16904918898000336224294912]