# A365247 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 15 5 50 6 177 7 650 8 2449 9 9412 10 36761 11 145518 12 582556 13 2354557 14 9594898 15 39378259 16 162619316 17 675258452 18 2817643240 19 11808576745 20 49683880754 21 209786559004 22 888676860191 23 3775654643360 24 16084818268474 25 68694452578325 26 294053067958011