# A372018 (b-file synthesized from sequence entry) 0 1 1 2 2 4 3 10 4 30 5 98 6 336 7 1194 8 4360 9 16258 10 61644 11 236938 12 921102 13 3615330 14 14307312 15 57024426 16 228701646 17 922283522 18 3737497980 19 15212318730 20 62160993642 21 254909413218 22 1048717979424 23 4327273358250 24 17903826642780 25 74260741616514 26 308724721176676