# A150084 (b-file synthesized from sequence entry) 0 1 1 2 2 6 3 19 4 65 5 233 6 865 7 3301 8 12875 9 51117 10 205976 11 840429 12 3466108 13 14428533 14 60553582 15 255966778 16 1088958246 17 4659451357 18 20040555293 19 86601741731 20 375841271002 21 1637517304050 22 7160331688467 23 31414117679299 24 138246342300698 25 610132138587868 26 2699915527292424 27 11977212862937455