# A105866 (b-file synthesized from sequence entry) 0 0 1 1 2 1 3 6 4 9 5 33 6 62 7 185 8 393 9 1062 10 2409 11 6193 12 14542 13 36441 14 87129 15 215478 16 520073 17 1277441 18 3098334 19 7583481 20 18439977 21 45050950 22 109690537 23 267731409 24 652322286 25 1591394457 26 3878780921 27 9460182998 28 23062009545 29 56239784865