# A056433 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 7 5 8 6 37 7 36 8 219 9 452 10 3000 11 5652 12 74961 13 126758 14 1371016 15 5653854 16 31440841 17 87796362 18 1319722484 19 2491714134 20 31893717065 21 121274777228 22 832622962686 23 2170594048582 24 34308978981089