A012666 - 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

A012666 as a simple table

n	a(n)
0	2
1	-4
2	230
3	-3848
4	497098
5	-14513420
6	5158219950
7	-47697728016
8	177486854140818
9	15468174530073068
10	17111710452932214902
11	4853812039531225331432
12	4006433870309112576215386

[2,-4,230,-3848,497098,-14513420,5158219950, -47697728016,177486854140818,15468174530073068, 17111710452932214902,4853812039531225331432, 4006433870309112576215386]