login

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

A009776 as a simple table

na(n)
00
11
2-1
3-3
412
5-25
6-15
7623
8-4592
918909
1017595
11-1233551
1213641276
13-81119597
14-105681667
1510102782675
16-148962722880
171158387845177
181940315387607
19-234950313889819
204330346354150860
21-41597707520306049
22-85160442362115351

[0,1,-1,-3,12,-25,-15,623,-4592,18909,17595,
 -1233551,13641276,-81119597,-105681667,
 10102782675,-148962722880,1158387845177,
 1940315387607,-234950313889819,4330346354150860,
 -41597707520306049,-85160442362115351]