login

A000976 as a simple table

na(n)
10
20
31
41
51
61
76
86
918
1018
1118
1254
1354
14378
151134
161134
179072
1881648
1981648
2081648
211714608
2218860688
2318860688
2456582064
2556582064
26735566832
2719860304464
28139022131248
29139022131248
30417066393744
312085331968720
322085331968720
3368815954967760

[0,0,1,1,1,1,6,6,18,18,18,54,54,378,1134,1134,
 9072,81648,81648,81648,1714608,18860688,18860688,
 56582064,56582064,735566832,19860304464,
 139022131248,139022131248,417066393744,
 2085331968720,2085331968720,68815954967760]