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”).

A341571 as a simple table

na(n)
01
121
2-666
3-34048
4-655335
5-7427988
6-55630666
7-290463138
8-1104081822
9-3239870284
10-7842842112
11-15742299384
12-24417702377
13-30080972403
14-28964466882
1522837159352
16121791163356
17164707345152
18491149796174
19668773471470
20222330211434
21722181385964
22715812714486

[1,21,-666,-34048,-655335,-7427988,-55630666,
 -290463138,-1104081822,-3239870284,-7842842112,
 -15742299384,-24417702377,-30080972403,
 -28964466882,22837159352,121791163356,
 164707345152,491149796174,668773471470,
 222330211434,722181385964,715812714486]