A143636 - OEIS

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A143636 as a simple table

n	a(n)
0	1
1	1
2	3
3	28
4	413
5	9216
6	289111
7	11925964
8	624637785
9	40422282112
10	3159287760491
11	292875271947468
12	31733363437993285
13	3969285168539789008
14	567118401777735330447
15	91714059231986721233596

[1,1,3,28,413,9216,289111,11925964,624637785, 40422282112,3159287760491,292875271947468, 31733363437993285,3969285168539789008, 567118401777735330447,91714059231986721233596]