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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A125353 Number of base 16 circular n-digit numbers with adjacent digits differing by 4 or less. 0
1, 16, 124, 796, 5924, 44916, 348652, 2743036, 21801764, 174565444, 1405459324, 11362215276, 92138276228, 748875775404, 6097017988948, 49701864868956, 405539673414148, 3311264043438796, 27050524930821556, 221065493126829404 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

[Empirical] a(base,n)=a(base-1,n)+A025014(n+1) for base>=4.int(n/2)+1

LINKS

Table of n, a(n) for n=0..19.

PROG

(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>4)+($[(i+1)mod N]`-$[i]`>4))

CROSSREFS

Sequence in context: A006215 A227088 A060633 * A126511 A231582 A067442

Adjacent sequences:  A125350 A125351 A125352 * A125354 A125355 A125356

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 16 05:43 EDT 2019. Contains 328044 sequences. (Running on oeis4.)