# A107659 (b-file synthesized from sequence entry) 0 1 1 4 2 10 3 24 4 52 5 112 6 232 7 480 8 976 9 1984 10 4000 11 8064 12 16192 13 32512 14 65152 15 130560 16 261376 17 523264 18 1047040 19 2095104 20 4191232 21 8384512 22 16771072 23 33546240 24 67096576 25 134201344 26 268410880 27 536838144 28 1073692672 29 2147418112