login

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”).

A156355 as a simple table

na(n)
01
1-5
2-36
31205
47380
5-210125
6-3788316
7605717365
83632251860
9-186736727075
10-5597575643196
11703478041485935
1212652030729445940
13-939579102463130225
14-39429249910858374876
1527028984410938324178725
16162037938162912202729620
17-15736046106303802197669575

[1,-5,-36,1205,7380,-210125,-3788316,605717365,
 3632251860,-186736727075,-5597575643196,
 703478041485935,12652030729445940,
 -939579102463130225,-39429249910858374876,
 27028984410938324178725,162037938162912202729620,
 -15736046106303802197669575]