# A204820 (b-file synthesized from sequence entry) 1 8 2 -192 3 161280 4 -638668800 5 6974263296000 6 -162193467211776000 7 6893871130369327104000 8 -483949753351926762700800000 9 52208499391605859160162304000000 10 -8200911084433448356878294712320000000