login

A018102 as a simple table

na(n)
01
12
24
39
420
542
689
7189
8400
9845
101788
113782
128000
1316917
1435777
1575659
16160000
17338358
18715541
191513186
203200000
216767176
2214310835
2330263731
2464000000
25135343521
26286216701
27605274629
281280000000
292706870434
305724334022
3112105492595
3225600000000

[1,2,4,9,20,42,89,189,400,845,1788,3782,8000,
 16917,35777,75659,160000,338358,715541,1513186,
 3200000,6767176,14310835,30263731,64000000,
 135343521,286216701,605274629,1280000000,
 2706870434,5724334022,12105492595,25600000000]