# A137200 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 2 4 4 5 5 6 7 7 9 8 13 9 18 10 25 11 34 12 47 13 65 14 90 15 124 16 171 17 236 18 326 19 450 20 621 21 857 22 1183 23 1633 24 2254 25 3111 26 4294 27 5927 28 8181 29 11292 30 15586 31 21513 32 29694 33 40986 34 56572 35 78085 36 107779 37 148765 38 205337 39 283422 40 391201 41 539966 42 745303 43 1028725 44 1419926 45 1959892