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A007555 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 23
5 107
6 586
7 3690
8 26245
9 207997
10 1817090
11 17345358
12 179595995
13 2004596903
14 23992185226
15 306497734962
16 4162467826729
17 59882101858777
18 909688617178178
19 14551535460258966
20 244477068964113407

[1,1,2,6,23,107,586,3690,26245,207997,1817090,
 17345358,179595995,2004596903,23992185226,
 306497734962,4162467826729,59882101858777,
 909688617178178,14551535460258966,
 244477068964113407]

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Last modified April 24 08:43 EDT 2024. Contains 371927 sequences. (Running on oeis4.)