# A100736 (b-file synthesized from sequence entry) 0 1 1 2 2 8 3 16 4 80 5 160 6 640 7 1280 8 6560 9 13120 10 52480 11 104960 12 524800 13 1049600 14 4198400 15 8396800 16 43046720 17 86093440 18 344373760 19 688747520 20 3443737600 21 6887475200 22 27549900800 23 55099801600 24 282386483200 25 564772966400