A083939 A014486-encoding of binary trees whose left and right subtree are identical.

0, 2, 50, 842, 908, 13610, 13868, 14642, 14900, 15416, 218282, 219308, 222386, 223412, 225464, 234698, 235724, 238802, 239828, 241880, 247010, 248036, 250088, 254192, 3494570, 3498668, 3510962, 3515060, 3523256, 3560138, 3564236, 3576530

Offset

0,2

Links

Table of n, a(n) for n=0..31.

Antti Karttunen, Ten initial terms illustrated in positions 0, 1, 6, 42, 52, 385, 414, 477, 506, 555

Index entries for encodings of plane rooted trees

Formula

a(n) = A014486(A083938(n)).

Crossrefs

Sequence in context: A007511 A016032 A080299 * A083941 A080263 A221241

Adjacent sequences: A083936 A083937 A083938 * A083940 A083941 A083942

Keyword

nonn

Author

Antti Karttunen, May 13 2003

Status

approved