# A028055 (b-file synthesized from sequence entry) 0 1 1 23 2 340 3 4130 4 45031 5 459893 6 4504690 7 42928160 8 401635861 9 3711270563 10 34005047440 11 309788905790 12 2811170579491 13 25442007146033 14 229842147512590 15 2073840099225020 16 18696506927851921 17 168462145714550303