# A032403 (b-file synthesized from sequence entry) 1 3 2 7 3 23 4 27 5 291 6 303 7 311 8 479 9 567 10 3087 11 18459 12 33575 13 43123 14 58291 15 155587 16 173007 17 414531 18 1220391 19 1337019 20 2081775 21 2401731