login

A003946 as a simple table

na(n)
01
14
212
336
4108
5324
6972
72916
88748
926244
1078732
11236196
12708588
132125764
146377292
1519131876
1657395628
17172186884
18516560652
191549681956
204649045868
2113947137604
2241841412812
23125524238436
24376572715308
251129718145924

[1,4,12,36,108,324,972,2916,8748,26244,78732,
 236196,708588,2125764,6377292,19131876,57395628,
 172186884,516560652,1549681956,4649045868,
 13947137604,41841412812,125524238436,376572715308,
 1129718145924]