login

A272586 as a simple table

na(n)
01
15
240
3200
4872
53624
614760
759560
8239272
9959144
103840680
1115370920
1261500072
13246033064
14984197800
153936922280

[1,5,40,200,872,3624,14760,59560,239272,959144,
 3840680,15370920,61500072,246033064,984197800,
 3936922280]