A166132 - OEIS

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A166132 as a simple table

n	a(n)
1	1
2	37
3	469
4	4789
5	45397
6	417781
7	3796885
8	34319413
9	309464533
10	2787540085
11	25097297941
12	225913430197
13	2033371866709
14	18300950780149
15	164710972940437
16	1482408420140341
17	13341714435968725
18	120075584542541173

[1,37,469,4789,45397,417781,3796885,34319413, 309464533,2787540085,25097297941,225913430197, 2033371866709,18300950780149,164710972940437, 1482408420140341,13341714435968725, 120075584542541173]