1,12
M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.
Table of n, a(n) for n=1..15.
A056507(n)-A056506(n).
For example, aaabbb is not a (finite) palindrome but it is a periodic palindrome. Permuting the symbols will not change the structure.
Cf. A056475.
Sequence in context: A147435 A203854 * A056523 A158998 A122559 A132131
Adjacent sequences: A056509 A056510 A056511 * A056513 A056514 A056515
nonn
Marks R. Nester (nesterm(AT)dpi.qld.gov.au)
approved
