A056484 Number of primitive (aperiodic) palindromic structures using exactly five different symbols.

0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 15, 15, 140, 140, 1050, 1050, 6951, 6950, 42525, 42524, 246730, 246715, 1379400, 1379385, 7508501, 7508361, 40075034, 40074895, 210766920, 210765869, 1096190550

Offset

1,11

Comments

Permuting the symbols will not change the structure.

References

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]

Links

Table of n, a(n) for n=1..31.

Formula

A056479(n)-A056478(n).

Crossrefs

Column 5 of A284826.

Cf. A056466.

Sequence in context: A022349 A036379 A070920 * A056474 A219912 A240980

Adjacent sequences: A056481 A056482 A056483 * A056485 A056486 A056487

Keyword

nonn

Author

Marks R. Nester

Status

approved