# A216788 (b-file synthesized from sequence entry) 0 1 1 156 2 25350 3 4174300 4 691890225 5 115130533440 6 19207610662240 7 3210414924974400 8 537343198067590200 9 90034838076214002400 10 15098842345381088202480 11 2533860269961226256525280 12 425477370330989242241536600 13 71480198215606192696578148800