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”).

A015152 as a simple table

na(n)
01
12
21
38
47
5134
637
78516
812259
92196098
10-1896671
112242814912
128371908703
139201070882046
14-50188906239587
15150640766448080444
161945921801461187291
179876134472777874272122
18-235305539337366453248999

[1,2,1,8,7,134,37,8516,12259,2196098,-1896671,
 2242814912,8371908703,9201070882046,
 -50188906239587,150640766448080444,
 1945921801461187291,9876134472777874272122,
 -235305539337366453248999]