A203195 - 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

A203195 as a simple table

n	a(n)
1	1
2	2
3	5
4	27
5	388
6	16436
7	2175432
8	934036488
9	1336005150480
10	6496133192508960
11	109111368146935714560
12	6414259771390908431554560
13	1334245289372299128934618629120
14	991211300949703256415518451506380800

[1,2,5,27,388,16436,2175432,934036488, 1336005150480,6496133192508960, 109111368146935714560,6414259771390908431554560, 1334245289372299128934618629120, 991211300949703256415518451506380800]