# A165690 (b-file synthesized from sequence entry) 0 1 1 40 2 1560 3 60840 4 2372760 5 92537640 6 3608967960 7 140749750440 8 5489240267160 9 214080370418460 10 8349134446289520 11 325616243404105680 12 12699033492713883120 13 495262306214038144080 14 19315229942277159012720