# A352902 (b-file synthesized from sequence entry) 0 1 1 2 2 3 3 4 4 7 5 18 6 49 7 120 8 264 9 544 10 1100 11 2256 12 4736 13 10080 14 21456 15 45312 16 94850 17 197412 18 410134 19 852968 20 1778382 21 3719364 22 7806338 23 16451280 24 34835184 25 74164800 26 158854536 27 342478432 28 743432288 29 1625079936 30 3576582592 31 7922065408 32 17648409603