login

A190064 as a simple table

na(n)
12
212
340
4144
5550
61896
77584
827328
9105348
10398760
111538696
125872800
1322646862
1487492676
15339055650
161313842904
175104724558
1819873572892
1977470783406
20302258087616
211180840902336
224618922848536
2318083348822516
2470852652846320

[2,12,40,144,550,1896,7584,27328,105348,398760,
 1538696,5872800,22646862,87492676,339055650,
 1313842904,5104724558,19873572892,77470783406,
 302258087616,1180840902336,4618922848536,
 18083348822516,70852652846320]