# A186081 (b-file synthesized from sequence entry)
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