login

A252475 as a simple table

na(n)
12
27
315
421
530
661
790
8177
9216
10395
11965
121628
132206
142212
153040
1610727
1710954
1829529
1962758
2094357
21196992
22314967
23608805
241258717
251767289
262449005
277939395
289373169
2916855002
3016855004
3132881951
3241084088
3383715358
3490288095
35151449068
36315082046

[2,7,15,21,30,61,90,177,216,395,965,1628,2206,
 2212,3040,10727,10954,29529,62758,94357,196992,
 314967,608805,1258717,1767289,2449005,7939395,
 9373169,16855002,16855004,32881951,41084088,
 83715358,90288095,151449068,315082046]