# A275691 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 2 4 4 5 8 6 17 7 36 8 78 9 168 10 364 11 786 12 1700 13 3668 14 7916 15 17056 16 36729 17 78996 18 169772 19 364472 20 781814 21 1675464 22 3587660 23 7675722 24 16409240 25 35052552 26 74822496 27 159599700 28 340199178 29 724675528 30 1542673868 31 3281957116 32 6977971852 33 14827596904 34 31489490296 35 66837617960 36 141789447876 37 300636048724 38 637116434912 39 1349532001896 40 2857195771769 41 6046370298448