# A207972 (b-file synthesized from sequence entry) 0 1 1 5 2 20 3 115 4 1665 5 82650 6 12847310 7 5620114060 8 6659421195205 9 21082748688390045 10 177217804775828062850 11 3941798437750184226876305 12 231505293200405380457355524620 13 35848160499603817968830380832049915 14 14619744406297572472084577939841875791890