# A302185 (b-file synthesized from sequence entry) 0 1 1 2 2 7 3 24 4 98 5 400 6 1785 7 7980 8 37674 9 178164 10 874146 11 4294752 12 21667932 13 109436184 14 563910633 15 2908233900 16 15235550330 17 79870553620 18 424021948350 19 2252356700880 20 12088746573540 21 64913104882080 22 351594254659830 23 1905139854213960 24 10399223643879420 25 56783986550235000