A164644 - 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

A164644 as a simple table

n	a(n)
0	1
1	27
2	702
3	18252
4	474552
5	12338352
6	320797152
7	8340725601
8	216858856500
9	5638330032075
10	146596574673900
11	3811510781360100
12	99099276151168800
13	2576581071661350000
14	66991105048200214050
15	1741768658063341610625

[1,27,702,18252,474552,12338352,320797152, 8340725601,216858856500,5638330032075, 146596574673900,3811510781360100, 99099276151168800,2576581071661350000, 66991105048200214050,1741768658063341610625]