# A193040 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 7 4 29 5 129 6 600 7 2889 8 14293 9 72228 10 371208 11 1934236 12 10194853 13 54258010 14 291175463 15 1573878211 16 8560931357 17 46825444031 18 257386132988 19 1421034475176 20 7876770462043 21 43817869686744 22 244552276036950 23 1368945007588648 24 7683977372121530