# A193093 (b-file synthesized from sequence entry) 0 1 1 2 2 3 3 6 4 14 5 19 6 24 7 72 8 130 9 169 10 120 11 432 12 918 13 1482 14 1877 15 720 16 3000 17 7224 18 13140 19 19846 20 24675 21 5040 22 23760 23 63600 24 127104 25 210726 26 304006 27 372611 28 40320 29 211680 30 622080 31 1350000 32 2412408 33 3754656 34 5234114 35 6340961 36 362880 37 2096640