# A017658 (b-file synthesized from sequence entry) 0 1771561 1 148035889 2 1838265625 3 10779215329 4 42180533641 5 128100283921 6 326940373369 7 735091890625 8 1500730351849 9 2839760855281 10 5053913144281 11 8550986578849 12 13867245015625 13 21691961596369