A119013 - OEIS

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A119013 as a simple table

n	a(n)
0	1
1	1
2	3
3	13
4	73
5	621
6	5491
7	60313
8	743793
9	10115353
10	158914531
11	2815311621
12	55094081593
13	1142894689093
14	25142695616403
15	594557634923281
16	15084112106943841
17	407999468524242993
18	11669035487641120963

[1,1,3,13,73,621,5491,60313,743793,10115353, 158914531,2815311621,55094081593,1142894689093, 25142695616403,594557634923281,15084112106943841, 407999468524242993,11669035487641120963]