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A305145 as a simple table

n a(n)
0 1
1 1
2 21
3 1886
4 381735
5 134584434
6 72514796422
7 55192152857400
8 56287911330435339
9 74043167807482274450
10 122040226074154110294114
11 246341047594913378800486668
12 597752265070243363135031803950
13 1716967839431601765698468898047292
14 5762431350664488199395983555754160140
15 22346478647255335081326815815314403748524 

[1,1,21,1886,381735,134584434,72514796422,
 55192152857400,56287911330435339,
 74043167807482274450,122040226074154110294114,
 246341047594913378800486668,
 597752265070243363135031803950,
 1716967839431601765698468898047292,
 5762431350664488199395983555754160140,
 22346478647255335081326815815314403748524]

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Last modified June 4 08:44 EDT 2024. Contains 373092 sequences. (Running on oeis4.)