# A150750 (b-file synthesized from sequence entry) 0 1 1 2 2 8 3 29 4 127 5 526 6 2420 7 10624 8 49914 9 226414 10 1076960 11 4987976 12 23924425 13 112344643 14 542087643 15 2571154955 16 12461595847 17 59550464104 18 289620932455 19 1392050985731 20 6788905487071 21 32780909125398 22 160230657330042 23 776576750273720 24 3802994157929216 25 18488348795133145 26 90683976946526103