|
| |
| |
|
|
|
1, 46, 2116, 97336, 4477456, 205962976, 9474296896, 435817657216, 20047612231936, 922190162669056, 42420747482776576, 1951354384207722496, 89762301673555234816, 4129065876983540801536, 189937030341242876870656
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,2
|
|
|
COMMENTS
| The compositions of n in which each natural number is colored by one of p different colors are called p-colored compositions of n. For n>=1, a(n) equals the number of 46-colored compositions of n such that no adjacent parts have the same color. - Milan Janjic, Nov 17 2011
|
|
|
LINKS
| T. D. Noe, Table of n, a(n) for n=0..100
Tanya Khovanova, Recursive Sequences
|
|
|
FORMULA
| G.f.: 1/(1-46*x). [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Nov 24 2008]
a(n)=46^n; a(n)=46*a(n-1) a(0)=1 [From Vincenzo Librandi, Nov 21 2010]
|
|
|
PROG
| (MAGMA)[46^n: n in [0..20]] [From Vincenzo Librandi, Nov 21 2010]
|
|
|
CROSSREFS
| Sequence in context: A170727 A170765 A158752 * A042013 A123830 A201234
Adjacent sequences: A009987 A009988 A009989 * A009991 A009992 A009993
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
|
| |
|
|
