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A127688 as a simple table

n a(n)
0 0
1 1
2 7
3 61
4 617
5 7761
6 117601
7 2097047
8 43046337
9 999999055
10 25937420761
11 743008360293
12 23298085076401
13 793714773119009
14 29192926024745505
15 1152921504604819951
16 48661191875656546561
17 2185911559738662072543
18 104127350297911055738281
19 5242879999999999345270925

[0,1,7,61,617,7761,117601,2097047,43046337,
 999999055,25937420761,743008360293,23298085076401,
 793714773119009,29192926024745505,
 1152921504604819951,48661191875656546561,
 2185911559738662072543,104127350297911055738281,
 5242879999999999345270925]

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Last modified October 5 21:20 EDT 2022. Contains 357261 sequences. (Running on oeis4.)