login

A270981 as a simple table

na(n)
01
18
240
3184
4820
53548
614420
759384
8238304
9957496
103836936
1115356088
1261449112
13245844452
14983503984
153934507380

[1,8,40,184,820,3548,14420,59384,238304,957496,
 3836936,15356088,61449112,245844452,983503984,
 3934507380]