# A138351 (b-file synthesized from sequence entry) 0 1 1 0 2 2 3 1 4 11 5 16 6 95 7 232 8 1085 9 3460 10 14820 11 54275 12 227095 13 895688 14 3756688 15 15462293 16 65586405 17 277342336 18 1192038266 19 5136760581 20 22357937431 21 97730561480 22 430177280197 23 1901975209706 24 8454151507801 25 37734802709796