# A179994 (b-file synthesized from sequence entry) 0 0 1 1 2 5 3 12 4 55 5 124 6 565 7 1268 8 5775 9 12956 10 59005 11 132372 12 602855 13 1352444 14 6159365 15 13817908 16 62930175 17 141177436 18 642957005 19 1442408532 20 6569085655 21 14737074364 22 67116286165 23 150568549748 24 685726462575 25 1538357452316