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A056479
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Number of primitive (aperiodic) palindromic structures using a maximum of five different symbols.
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3
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1, 0, 1, 1, 4, 3, 14, 13, 50, 47, 201, 196, 854, 840, 3839, 3830, 18001, 17947, 86471, 86419, 421989, 421803, 2079474, 2079260, 10306747, 10305897, 51263890, 51263086, 255514354, 255510460, 1275163904
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,5
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COMMENTS
| Permuting the symbols will not change the structure.
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REFERENCES
| M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.
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FORMULA
| Sum mu(d)*A056470(n/d) where d|n.
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CROSSREFS
| Cf. A056461.
Sequence in context: A140884 A082383 A056478 * A056480 A197883 A095332
Adjacent sequences: A056476 A056477 A056478 * A056480 A056481 A056482
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KEYWORD
| nonn
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AUTHOR
| Marks R. Nester (nesterm(AT)dpi.qld.gov.au)
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