A243496 Matula-Goebel signature computed for the oriented trees that stay same when "deep-rotated": a(n) = A127301(A243495(n)), listed in the same order as those tree are encoded in A014486.

1, 2, 4, 3, 8, 7, 5, 16, 9, 19, 17, 11, 32, 53, 23, 67, 59, 31, 64, 27, 49, 131, 25, 241, 83, 331, 277, 127, 128, 311, 103, 227, 739, 97, 1523, 431, 2221, 1787, 709, 256, 81, 361, 719, 169, 169, 289, 2063, 121, 563, 1433, 5623, 509, 12763, 3001, 19577, 15299, 5381, 512

Offset: 0

Author

Antti Karttunen, Jun 07 2014

Keywords

• nonn

Comments

Note the first duplicate at a(43) = a(44) = 169, computed for two distinct fixed points in A243495: 1330 & 1535, which encode as A007088(A014486(1330)) = 1101100011100100 and A007088(A014486(1535)) = 1110010011011000 exactly those "dual cases" mentioned in the comments in A057546. Cf. also the comments at A243497.

Crossrefs

Cf. A057546, A014486, A127301, A243495, A243497.

Programs

Scheme

(define (A243496 n) (A127301 (A243495 n)))