A326717 - 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

A326717 as a simple table

n	a(n)
0	1
1	0
2	1
3	0
4	127
5	126
6	0
7	255256
8	381381
9	126126
10	0
11	2979852651
12	5447453786
13	2956465512
14	488864376
15	0
16	127156445503275
17	264284637872750
18	184292523727620
19	52359004217520
20	5194672859376

[1,0,1,0,127,126,0,255256,381381,126126,0, 2979852651,5447453786,2956465512,488864376,0, 127156445503275,264284637872750,184292523727620, 52359004217520,5194672859376]