# A172060 (b-file synthesized from sequence entry) 0 0 1 2 2 14 3 76 4 374 5 1748 6 7916 7 35096 8 153254 9 661636 10 2831300 11 12030632 12 50826684 13 213707336 14 894945944 15 3734901296 16 15540685574 17 64496348516 18 267060529364 19 1103587381256 20 4552196053844 21 18747042089816 22 77092267322984 23 316602500019536 24 1298657603761244