# A367072 (b-file synthesized from sequence entry) 0 1 1 1 2 0 3 2 4 6 5 6 6 14 7 60 8 120 9 216 10 732 11 2028 12 4240 13 11280 14 33696 15 83328 16 207072 17 591360 18 1606752 19 4102656 20 11172528 21 31167280 22 83112000 23 223249824 24 619860960 25 1699634784 26 4603619616 27 12689107200 28 35170240512 29 96523315200 30 265883115264 31 738668408064