A052601 - 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

A052601 as a simple table

n	a(n)
0	1
1	0
2	0
3	12
4	48
5	240
6	4320
7	50400
8	564480
9	9434880
10	166924800
11	2953843200
12	60354201600
13	1357490534400
14	31907254579200
15	808142759424000
16	22052620541952000
17	635257746579456000
18	19347973338710016000

[1,0,0,12,48,240,4320,50400,564480,9434880, 166924800,2953843200,60354201600,1357490534400, 31907254579200,808142759424000,22052620541952000, 635257746579456000,19347973338710016000]