|
Search: id:A056492
|
|
|
| A056492 |
|
Number of periodic palindromes using exactly six different symbols. |
|
+0
2
|
|
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 360, 720, 7920, 15120, 103320, 191520, 1048320, 1905120, 9170280, 16435440, 72833040, 129230640, 541130040, 953029440, 3832187040, 6711344640, 26192766600, 45674188560
(list; graph; listen)
|
|
|
OFFSET
|
1,10
|
|
|
REFERENCES
|
M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.
|
|
FORMULA
|
2*A056346(n)-A056286(n).
|
|
EXAMPLE
|
For example, aaabbb is not a (finite) palindrome but it is a periodic palindrome.
|
|
CROSSREFS
|
Cf. A056457.
Sequence in context: A076205 A048978 A056502 this_sequence A158308 A112536 A140801
Adjacent sequences: A056489 A056490 A056491 this_sequence A056493 A056494 A056495
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Marks R. Nester (nesterm(AT)dpi.qld.gov.au)
|
|
|
Search completed in 0.002 seconds
|
