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”).

A025554 as a simple table

na(n)
11
20
31
41
52
67
717
8107
9113
10329
11334
123644
133659
1447462
1595029
1694973
1795001
181614765
191614891
2030681669
2130682299
2230681969
2330682134
24705687102
25705688092
263528437886
273528439173
2810585315517
2910585316518
30306974164007
31613948343029

[1,0,1,1,2,7,17,107,113,329,334,3644,3659,47462,
 95029,94973,95001,1614765,1614891,30681669,
 30682299,30681969,30682134,705687102,705688092,
 3528437886,3528439173,10585315517,10585316518,
 306974164007,613948343029]