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”).

A210322 as a simple table

na(n)
10
20
30
40
50
60
70
80
96
1036
11150
12464
131304
143349
158213
1619230
1743867
1897644
19213776
20461240
21984603
222082436

[0,0,0,0,0,0,0,0,6,36,150,464,1304,3349,8213,
 19230,43867,97644,213776,461240,984603,2082436]