# A015159 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 0 4 0 5 0 6 0 7 816 8 2040 9 0 10 0 11 20400 12 41956 13 0 14 0 15 236912 16 362406 17 0 18 0 19 1236240 20 1933920 21 0 22 0 23 5861328 24 7591792 25 0 26 0 27 17201280 28 24124428 29 0 30 0 31 55003296 32 65640978 33 0 34 0 35 120568080 36 158815904 37 0 38 0 39 307510960 40 350243520 41 0 42 0 43 564643440 44 715382916 45 0 46 0 47 1246785984 48 1373241708 49 0 50 0