|
Search: id:A126378
|
|
|
| A126378 |
|
Number of base 24 n-digit numbers with adjacent digits differing by one or less. |
|
+0
5
|
|
| 1, 24, 70, 206, 608, 1798, 5324, 15780, 46806, 138918, 412508, 1225432, 3641690, 10825628, 32190154, 95741294, 284820048, 847475910, 2522096172, 7507000776, 22347852666, 66537181776, 198128815230, 590039959434, 1757365514652
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
[Empirical] a(base,n)=a(base-1,n)+3^(n-1) for base>=n; a(base,n)=a(base-1,n)+3^(n-1)-2 when base=n-1
|
|
PROGRAM
|
(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-2](($[i]`-$[i+1]`>1)+($[i+1]`-$[i]`>1))
|
|
CROSSREFS
|
Sequence in context: A051876 A069174 A124717 this_sequence A006352 A090860 A064200
Adjacent sequences: A126375 A126376 A126377 this_sequence A126379 A126380 A126381
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Ron Hardin (rhh(AT)cadence.com), Dec 26 2006
|
|
|
Search completed in 0.002 seconds
|
