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A111547 as a simple table

n a(n)
0 1
1 4
2 23
3 165
4 1383
5 13083
6 136863
7 1562715
8 19301319
9 256191363
10 3636036783
11 54956529675
12 881578601559
13 14964805041363
14 268105552191423
15 5057384615702235
16 100224731537223399
17 2082402995330965923

[1,4,23,165,1383,13083,136863,1562715,19301319,
 256191363,3636036783,54956529675,881578601559,
 14964805041363,268105552191423,5057384615702235,
 100224731537223399,2082402995330965923]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)