# A067409 (b-file synthesized from sequence entry) 0 1 1 17 2 1377 3 111537 4 9034497 5 731794257 6 59275334817 7 4801302120177 8 388905471734337 9 31501343210481297 10 2551608800048985057 11 206680312803967789617 12 16741105337121390958977 13 1356029532306832667677137 14 109838392116853446081848097 15 8896909761465129132629695857