login

A000643 as a simple table

na(n)
00
10
21
32
44
58
624
7280
816777496
91942668892225729070919461906823518906642406839052139521251812409738904285205225275672

[0,0,1,2,4,8,24,280,16777496,
 19426688922257290709194619068235189066424068390521\
 39521251812409738904285205225275672]