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”).

A130421 as a simple table

na(n)
11
22
314
41022
520066
680519
7107663
8485918
91284113
101510313
112531678
123677198
133933023
144557713
158277458
168893262
1721122318
1824849833
1926358638
2039852014
2142448478
2271871113
2376712318
2480646143
2598058097
26104832833
27106694033
28131492498
29144322478
30146987033
31164360606
32168204191
33175126478
34176647378
35188997463
36196705598

[1,2,14,1022,20066,80519,107663,485918,1284113,
 1510313,2531678,3677198,3933023,4557713,8277458,
 8893262,21122318,24849833,26358638,39852014,
 42448478,71871113,76712318,80646143,98058097,
 104832833,106694033,131492498,144322478,146987033,
 164360606,168204191,175126478,176647378,188997463,
 196705598]