# A004061 (b-file synthesized from sequence entry) 1 3 2 7 3 11 4 13 5 47 6 127 7 149 8 181 9 619 10 929 11 3407 12 10949 13 13241 14 13873 15 16519 16 201359 17 396413 18 1888279 19 3300593