A172865 - OEIS

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A172865 as a simple table

n	a(n)
1	1
2	141
3	28681
4	7100821
5	1985311701
6	596500235301
7	189988969424241
8	63276181484771781
9	21822522304624196821
10	7739410228312751312641
11	2808322218896473982264541
12	1038651765223403011577901181

[1,141,28681,7100821,1985311701,596500235301, 189988969424241,63276181484771781, 21822522304624196821,7739410228312751312641, 2808322218896473982264541, 1038651765223403011577901181]