1,6

M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia. [See A056391 for pdf file of Chap. 2]

Table of n, a(n) for n=1..35.

A056514(n)-A056513(n).

For example, aaabbb is not a (finite) palindrome but it is a periodic palindrome. Permuting the symbols will not change the structure.

Column 3 of A285037.

Cf. A056482.

Sequence in context: A041747 A180134 A192727 * A295972 A063445 A257331

Adjacent sequences: A056516 A056517 A056518 * A056520 A056521 A056522

nonn

Marks R. Nester

a(17)-a(35) from Andrew Howroyd, Apr 08 2017

approved