# A147808 (b-file synthesized from sequence entry) 1 45 2 495 3 49500 4 3314850 5 331431000 6 27336542310 7 2733612983100 8 238305122029260 9 23830484311542600 10 2140037814262627400 11 214003761418373774000 12 19587943639318412097360 13 1958794348735327250973600 14 181693537570273520779480800