A281808 - 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

A281808 as a simple table

n	a(n)
1	0
2	400
3	5191
4	117401
5	1770697
6	28237876
7	436154254
8	6282549989
9	91589152155
10	1288443030127
11	17891751065943
12	246129086382234
13	3333215777163938
14	44817385604532614
15	597117631739752174
16	7892791183495285965

[0,400,5191,117401,1770697,28237876,436154254, 6282549989,91589152155,1288443030127, 17891751065943,246129086382234,3333215777163938, 44817385604532614,597117631739752174, 7892791183495285965]