login

A115156 as a simple table

na(n)
12
26
328
454
5405
6486
72808
84860
921870
1040824
11192456
12524160
13708588
144059072
1514348907
1658576608
17123731712
18462944160
191837080000
203874204890
2111809800000
2248183984000
2365086642152
24339033848832
251360965131136
262928898896840
276595446404736

[2,6,28,54,405,486,2808,4860,21870,40824,192456,
 524160,708588,4059072,14348907,58576608,123731712,
 462944160,1837080000,3874204890,11809800000,
 48183984000,65086642152,339033848832,
 1360965131136,2928898896840,6595446404736]