login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A131656 as a simple table

na(n)
0-1
13
20
33
45
518
666
7298
81511
98670
1055168
11386394
122951673
1324428654
14217723390
152079109386
1621177620171
17229195610430
182626388037372
1931768201320634
20404485298533085
215407570127090958
2275736453324821754
231108952444876609898
2416943545270848408495

[-1,3,0,3,5,18,66,298,1511,8670,55168,386394,
 2951673,24428654,217723390,2079109386,21177620171,
 229195610430,2626388037372,31768201320634,
 404485298533085,5407570127090958,
 75736453324821754,1108952444876609898,
 16943545270848408495]