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A125413 Number of base 25 circular n-digit numbers with adjacent digits differing by 6 or less. 0
1, 25, 283, 2629, 28423, 313205, 3533323, 40410633, 467043615, 5439818107, 63736363043, 750192541937, 8861195897479, 104954282605873, 1245741516044273, 14810409132947099, 176301253742737935 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

[Empirical] a(base,n)=a(base-1,n)+F(6) for base>=6.int(n/2)+1 and F(d) is the largest coefficient in (1+x+...+x^(2d))^n

LINKS

Table of n, a(n) for n=0..16.

PROG

(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>6)+($[(i+1)mod N]`-$[i]`>6))

CROSSREFS

Sequence in context: A061617 A078463 A231790 * A160084 A265967 A225873

Adjacent sequences:  A125410 A125411 A125412 * A125414 A125415 A125416

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved

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Last modified April 19 22:22 EDT 2019. Contains 322291 sequences. (Running on oeis4.)