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A186081 as a simple table

n a(n)
0 1
1 1
2 4
3 144
4 25696
5 18082560
6 47025585664
7 450955726792704
8 16260917603754029056
9 2253010420928564535951360
10 1219004114245442237742488879104
11 2601909995433633381004133738019815424
12 22040854392120341022554569447470527813779456

[1,1,4,144,25696,18082560,47025585664,
 450955726792704,16260917603754029056,
 2253010420928564535951360,
 1219004114245442237742488879104,
 2601909995433633381004133738019815424,
 22040854392120341022554569447470527813779456]

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Last modified April 16 14:51 EDT 2024. Contains 371749 sequences. (Running on oeis4.)