# A336262 (b-file synthesized from sequence entry) 0 1 1 4 2 12 3 36 4 108 5 324 6 972 7 2876 8 8364 9 24124 10 69116 11 196916 12 559604 13 1585764 14 4495740 15 12714796 16 35654620 17 99686708 18 278880060 19 781504972 20 2180418716 21 6079373324 22 16857930068 23 46773551052 24 129562831140 25 358157148332