# A104083 (b-file synthesized from sequence entry) 0 2 1 5 2 29 3 127 4 631 5 3137 6 15629 7 78137 8 390647 9 1953151 10 9765629 11 48828139 12 244140683 13 1220703131 14 6103515637 15 30517578167 16 152587890649 17 762939453127 18 3814697265637 19 19073486328181 20 95367431640673 21 476837158203149