# A336724 (b-file synthesized from sequence entry) 0 1 1 3 2 7 3 17 4 37 5 83 6 181 7 399 8 863 9 1887 10 4057 11 8797 12 18851 13 40649 14 86911 15 186705 16 398413 17 853407 18 1818099 19 3885377 20 8266359 21 17632961 22 37473467 23 79814011 24 169457991 25 360469139 26 764700473 27 1624915019 28 3444615545 29 7312733017 30 15492242679 31 32862908109 32 69581860921 33 147497088201