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A072221 as a simple table

na(n)
01
14
225
3148
4865
55044
629401
7171364
8998785
95821348
1033929305
11197754484
121152597601
136717831124
1439154389145
15228208503748
161330096633345
177752371296324
1845184131144601
19263352415571284
201534930362283105
218946229758127348
2252142448186480985

[1,4,25,148,865,5044,29401,171364,998785,5821348,
 33929305,197754484,1152597601,6717831124,
 39154389145,228208503748,1330096633345,
 7752371296324,45184131144601,263352415571284,
 1534930362283105,8946229758127348,
 52142448186480985]