# A275871 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 15 4 61 5 272 6 1317 7 6865 8 38278 9 227093 10 1426921 11 9457918 12 65898275 13 481177881 14 3672102116 15 29218285875 16 241873478425 17 2079079678176 18 18524191138689 19 170803860905237 20 1627465240969382