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A056466 Number of primitive (aperiodic) palindromes using exactly five different symbols. +0
3
0, 0, 0, 0, 0, 0, 0, 0, 120, 120, 1800, 1800, 16800, 16800, 126000, 126000, 834120, 834000, 5103000, 5102880, 29607600, 29605800, 165528000, 165526200, 901020120, 901003320, 4809004080, 4808987400, 25292030400 (list; graph; listen)
OFFSET

1,9

REFERENCES

M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.

FORMULA

Sum mu(d)*A056456(n/d) where d|n.

CROSSREFS

Cf. A056461.

Sequence in context: A062690 A127148 A051727 this_sequence A056456 A085218 A117645

Adjacent sequences: A056463 A056464 A056465 this_sequence A056467 A056468 A056469

KEYWORD

nonn

AUTHOR

Marks R. Nester (nesterm(AT)dpi.qld.gov.au)

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Last modified December 6 22:55 EST 2009. Contains 170429 sequences.


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