login

A128496 as a simple table

na(n)
01
12
24
39
420
550
6125
7324
8840
92195
105736
1115012
1239289
13102854
14269260
15704925
161845500
174831574
1812649205
1933116040
2086698896
21226980647
22594243024
231555748424
244073002225
2510663258250
2627916772500
2773087059249
28191344405220

[1,2,4,9,20,50,125,324,840,2195,5736,15012,39289,
 102854,269260,704925,1845500,4831574,12649205,
 33116040,86698896,226980647,594243024,1555748424,
 4073002225,10663258250,27916772500,73087059249,
 191344405220]