# A354696 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 10 4 20 5 36 6 64 7 120 8 240 9 499 10 1060 11 2314 12 5252 13 12360 14 29632 15 70992 16 168096 17 392465 18 905940 19 2075314 20 4730052 21 10735516 22 24258688 23 54553000 24 122076240 25 271914499 26 603183508 27 1333268098 28 2937818900 29 6455143760 30 14146816640 31 30929336736 32 67473335104