A012312 - 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

A012312 as a simple table

n	a(n)
0	0
1	0
2	2
3	-3
4	12
5	-40
6	478
7	-3759
8	40152
9	-387864
10	5203962
11	-70961715
12	1142838180
13	-18621542160
14	342700299030
15	-6622936396335
16	140637395893680
17	-3129194141386320
18	74723900156463090
19	-1873298738386231875

[0,0,2,-3,12,-40,478,-3759,40152,-387864,5203962, -70961715,1142838180,-18621542160,342700299030, -6622936396335,140637395893680,-3129194141386320, 74723900156463090,-1873298738386231875]