# A012124 (b-file synthesized from sequence entry) 0 1 1 0 2 4 3 24 4 1744 5 61504 6 6700992 7 632723584 8 106726576384 9 19137224693760 10 4819549055104000 11 1376115921056118784 12 493566558620424622080 13 203121814961910275620864 14 99267625002820837091098624