A226286 - 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

A226286 as a simple table

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	14400
11	518400
12	18662400
13	457228800
14	11202105600
15	238978252800
16	5098202726400
17	103238605209600
18	2090581755494400
19	41811635109888000
20	836232702197760000
21	16864026160988160000

[0,0,0,0,0,0,0,0,0,14400,518400,18662400, 457228800,11202105600,238978252800,5098202726400, 103238605209600,2090581755494400, 41811635109888000,836232702197760000, 16864026160988160000]