# A176606 (b-file synthesized from sequence entry) 0 1 1 3 2 7 3 24 4 91 5 376 6 1635 7 7377 8 34197 9 161876 10 779125 11 3801307 12 18757219 13 93444662 14 469349303 15 2374206202 16 12084696935 17 61848753886 18 318082531211 19 1643009103729 20 8520055528453 21 44338931718570 22 231488012768833