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A031971 as a simple table

n a(n)
1 1
2 5
3 36
4 354
5 4425
6 67171
7 1200304
8 24684612
9 574304985
10 14914341925
11 427675990236
12 13421957361110
13 457593884876401
14 16841089312342855
15 665478473553144000
16 28101527071305611528
17 1262899292504270591313
18 60182438244917445266889
19 3031284048960901518840700 

[1,5,36,354,4425,67171,1200304,24684612,574304985,
 14914341925,427675990236,13421957361110,
 457593884876401,16841089312342855,
 665478473553144000,28101527071305611528,
 1262899292504270591313,60182438244917445266889,
 3031284048960901518840700]

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Last modified April 24 03:08 EDT 2024. Contains 371918 sequences. (Running on oeis4.)