login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A126368 Number of base 14 n-digit numbers with adjacent digits differing by one or less. 4
1, 14, 40, 116, 338, 988, 2894, 8490, 24936, 73308, 215678, 634942, 1870220, 5511218, 16246924, 47911604, 141330980, 417008740, 1230695000, 3632799810, 10725265920, 31669512054, 93526269170, 276234529396, 815959178108 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

[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

LINKS

Table of n, a(n) for n=0..24.

PROG

(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: A101740 A069126 A124707 * A125816 A105869 A216298

Adjacent sequences:  A126365 A126366 A126367 * A126369 A126370 A126371

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 26 2006

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified June 25 11:55 EDT 2017. Contains 288710 sequences.