# A259903 (b-file synthesized from sequence entry) 0 1 1 3 2 14 3 91 4 770 5 8050 6 100268 7 1449742 8 23865548 9 440676460 10 9019620680 11 202671360724 12 4959803073176 13 131305759645144 14 3739011996408080 15 113954082693469480 16 3701040157021402832 17 127610023505869902928 18 4655283171722971780832 19 179142225346223264881840