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

Author

Antti Karttunen, May 13 2003

Keywords

• nonn

Links

• 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)).