# A368318 (b-file synthesized from sequence entry) 0 1 1 2 2 5 3 16 4 62 5 264 6 1170 7 5310 8 24599 9 116090 10 556569 11 2703098 12 13268900 13 65721840 14 328050639 15 1648535856 16 8333536002 17 42348587700 18 216211838178 19 1108514508608 20 5704874555112 21 29460504457692 22 152612723209700 23 792833380805160 24 4129639139612133