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A156158 as a simple table

n a(n)
1 25
2 137
3 797
4 4645
5 27073
6 157793
7 919685
8 5360317
9 31242217
10 182092985
11 1061315693
12 6185801173
13 36053491345
14 210135146897
15 1224757390037
16 7138409193325
17 41605697769913
18 242495777426153
19 1413368966787005

[25,137,797,4645,27073,157793,919685,5360317,
 31242217,182092985,1061315693,6185801173,
 36053491345,210135146897,1224757390037,
 7138409193325,41605697769913,242495777426153,
 1413368966787005]

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Last modified July 8 19:20 EDT 2020. Contains 335524 sequences. (Running on oeis4.)