A146776 - 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

A146776 as a simple table

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	17
8	27
9	551
10	1025
11	9065
12	24039
13	430341
14	1208611
15	88984447
16	322624067
17	42836270201
18	190686627801
19	27661973527585
20	149211196626477
21	36642661396277021

[1,1,1,1,1,1,17,27,551,1025,9065,24039,430341, 1208611,88984447,322624067,42836270201, 190686627801,27661973527585,149211196626477, 36642661396277021]