# A346312 (b-file synthesized from sequence entry) 0 1 1 -1 2 -1 3 5 4 28 5 724 6 36 7 220716 8 -1255680 9 110979072 10 2530310400 11 1193835283200 12 -24457819622400 13 21656019855744000 14 899271273253248000 15 474367063601421849600 16 45822442913828595302400 17 28365278076547150440038400 18 2614371018285307258994688000