login

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

A319271 as a simple table

na(n)
11
21
30
41
51
63
73
89
912
1027
1142
1291
13151
14312
15550
161099
172026
183999
197527
2014804
2128336
2255641
23107737
24211851
25413508
26814971
271600512
283162761
296241234

[1,1,0,1,1,3,3,9,12,27,42,91,151,312,550,1099,
 2026,3999,7527,14804,28336,55641,107737,211851,
 413508,814971,1600512,3162761,6241234]