# A067991 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 7 5 11 6 12 7 27 8 31 9 56 10 107 11 109 12 132 13 309 14 343 15 627 16 968 17 1332 18 1891 19 3129 20 3434 21 5291 22 5656 23 8831 24 13332 25 18972 26 19492 27 28248 28 37067 29 58309 30 107516 31 140547 32 278172 33 281743 34 368507 35 424256 36 774325 37 1247307 38 2788547 39 3126968 40 3660565 41 3949427 42 7732916