# A186236 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 13 5 34 6 93 7 262 8 753 9 2198 10 6502 11 19449 12 58724 13 178739 14 547836 15 1689407 16 5237939 17 16318137 18 51056027 19 160363129 20 505456920 21 1598263936 22 5068483189 23 16116397411 24 51371962474 25 164123564499 26 525447953073 27 1685534207788 28 5416719384326 29 17437073203711