login

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

A276027 as a simple table

na(n)
11
21
31
42
54
67
718
843
993
10266
11702
121687
135136
1414405
1536898
16117016
17341842
18914064
192983027
208972121
2124743851
2282478973
23253555061
24715745648
252424954125
267582390623
2721796481477
2874805170349
29237095926682
30691568408221
312398418942361
327686495623620

[1,1,1,2,4,7,18,43,93,266,702,1687,5136,14405,
 36898,117016,341842,914064,2983027,8972121,
 24743851,82478973,253555061,715745648,2424954125,
 7582390623,21796481477,74805170349,237095926682,
 691568408221,2398418942361,7686495623620]