A081292 Intersection of A014486 and A079946.

0, 12, 50, 52, 56, 202, 204, 210, 212, 216, 226, 228, 232, 240, 810, 812, 818, 820, 824, 842, 844, 850, 852, 856, 866, 868, 872, 880, 906, 908, 914, 916, 920, 930, 932, 936, 944, 962, 964, 968, 976, 992, 3242, 3244, 3250, 3252, 3256, 3274, 3276, 3282, 3284

Offset: 1

Author

Antti Karttunen, Mar 17 2003

Keywords

• nonn

Comments

These are A014486-encodings of the binary trees (or equivalent general trees) whose left subtree (equivalently: leftmost branch) is not just a single edge.

Links

• Antti Karttunen, Initial terms illustrated in positions 0,3,6,7,8,14,15,16,17,18,...

Crossrefs

Cf. A014486, A079946.

Formula

a(n) = A014486(A081291(n)).