A233688 - OEIS

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A233688 as a simple table

n	a(n)
1	3940
2	64756
3	1095164
4	19588516
5	350631128
6	6324816860
7	113995582540
8	2057970474012
9	37133987692488
10	670381088418328
11	12099509545057848
12	218421025411832340
13	3942529399269404948
14	71168489691941827604

[3940,64756,1095164,19588516,350631128,6324816860, 113995582540,2057970474012,37133987692488, 670381088418328,12099509545057848, 218421025411832340,3942529399269404948, 71168489691941827604]