# A125376 (b-file synthesized from sequence entry) 0 1 1 13 2 113 3 853 4 7333 5 64363 6 574739 7 5174497 8 46797333 9 424220677 10 3850319843 11 34968769519 12 317694077779 13 2886778840153 14 26233562935679 15 238408390689523 16 2166688400848533 17 19691415248239135 18 178961780093458481