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A007197 as a simple table

n a(n)
1 1
2 5
3 31
4 209
5 1476
6 10739
7 79780
8 601905
9 4595485
10 35419710
11 275109858
12 2150537435
13 16901814190
14 133452123796
15 1057920031536 

[1,5,31,209,1476,10739,79780,601905,4595485,
 35419710,275109858,2150537435,16901814190,
 133452123796,1057920031536]

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Last modified April 18 16:22 EDT 2024. Contains 371780 sequences. (Running on oeis4.)