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

Author

Marks R. Nester

Keywords

• nonn

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]

Crossrefs

Column 5 of A284826.

Cf. A056466.

Formula

A056479(n)-A056478(n).