login

A000517 as a simple table

na(n)
7272
87936
9137216
101841152
1121253376
12222398464
132174832640
1420261765120
15182172651520
161594922762240
1713684856848384
18115620218667008
19965271355195392
207984436548730880
2165569731961159680
22535438370914959360
234353038473793372160
2435266789418949672960

[272,7936,137216,1841152,21253376,222398464,
 2174832640,20261765120,182172651520,1594922762240,
 13684856848384,115620218667008,965271355195392,
 7984436548730880,65569731961159680,
 535438370914959360,4353038473793372160,
 35266789418949672960]