Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A056460
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A056460 Number of primitive (aperiodic) palindromes using a maximum of four different symbols. +0
4
4, 0, 12, 12, 60, 48, 252, 240, 1008, 960, 4092, 4020, 16380, 16128, 65460, 65280, 262140, 261072, 1048572, 1047540, 4194036, 4190208, 16777212, 16772880, 67108800, 67092480, 268434432, 268419060 (list; graph; listen)
OFFSET

1,1

REFERENCES

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

FORMULA

Sum mu(d)*A056450(n/d) where d|n.

CROSSREFS

Sequence in context: A072194 A076600 A002978 this_sequence A137523 A117786 A117788

Adjacent sequences: A056457 A056458 A056459 this_sequence A056461 A056462 A056463

KEYWORD

nonn

AUTHOR

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

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified September 5 19:27 EDT 2008. Contains 143485 sequences.


AT&T Labs Research