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A001056 as a simple table

n a(n)
0 1
1 3
2 4
3 13
4 53
5 690
6 36571
7 25233991
8 922832284862
9 23286741570717144243
10 21489756930695820973683319349467
11 500426416062641238759467086706254193219790764168482
12 10754042042885415070816603338436200915110904821126871858491675028294447933424899095

[1,3,4,13,53,690,36571,25233991,922832284862,
 23286741570717144243,
 21489756930695820973683319349467,
 50042641606264123875946708670625419321979076416848\
 2,
 10754042042885415070816603338436200915110904821126\
 871858491675028294447933424899095]

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Last modified May 31 16:29 EDT 2020. Contains 334748 sequences. (Running on oeis4.)