# Table of n, a(n) for n = 0..32 # Generated by Georg Fischer with jOEIS, Jul 03 2021 0 1 1 0 2 0 3 0 4 27288 5 501760 6 12738432 7 182458368 8 1862977116 9 13739292672 10 74852604288 11 306460084224 12 956270217000 13 2294484111360 14 4268285380352 15 6180152832000 16 6991765639110 17 6180152832000 18 4268285380352 19 2294484111360 20 956270217000 21 306460084224 22 74852604288 23 13739292672 24 1862977116 25 182458368 26 12738432 27 501760 28 27288 29 0 30 0 31 0 32 1