A128485 - OEIS

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A128485 as a simple table

n	a(n)
1	1
2	1
3	1
4	2
5	3
6	5
7	8
8	39
9	235
10	1096
11	51909
12	2491235
13	348410728
14	6071656665789
15	15126791566796828495
16	1317584644380565684408069688
17	7999921680639175567165604204659004361387

[1,1,1,2,3,5,8,39,235,1096,51909,2491235, 348410728,6071656665789,15126791566796828495, 1317584644380565684408069688, 7999921680639175567165604204659004361387]