A114870 - OEIS

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A114870 as a simple table

n	a(n)
0	0
1	1
2	5
3	25
4	141
5	911
6	6703
7	55581
8	513929
9	5248891
10	58724211
11	714554633
12	9397715341
13	132870076119
14	2009977939271
15	32396622193141
16	554297204755473
17	10034223725151731
18	191617109450287579
19	3849745645109036001

[0,1,5,25,141,911,6703,55581,513929,5248891, 58724211,714554633,9397715341,132870076119, 2009977939271,32396622193141,554297204755473, 10034223725151731,191617109450287579, 3849745645109036001]

[0,1,5,25,141,911,6703,55581,513929,5248891,
 58724211,714554633,9397715341,132870076119,
 2009977939271,32396622193141,554297204755473,
 10034223725151731,191617109450287579,
 3849745645109036001]