# A075511 (b-file synthesized from sequence entry) 0 1 1 42 2 1064 3 21168 4 365232 5 5743584 6 84713728 7 1193127936 8 16239711488 9 215394955776 10 2800564795392 11 35851775791104 12 453374980255744 13 5677724481773568 14 70550796621971456 15 871159544637161472