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A125461 Number of base 26 circular n-digit numbers with adjacent digits differing by 8 or less. 0
1, 26, 370, 4418, 60994, 859946, 12394450, 180932330, 2664959170, 39489358346, 587550685330, 8766115538074, 131030613689314, 1960994655183018, 29372400375221042, 440191998016208378, 6599400854146523778 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

[Empirical] a(base,n)=a(base-1,n)+F(8) for base>=8.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]`-$[(i+1)mod N]`>8)+($[(i+1)mod N]`-$[i]`>8))

CROSSREFS

Sequence in context: A010978 A022590 A004414 * A022654 A183187 A004318

Adjacent sequences:  A125458 A125459 A125460 * A125462 A125463 A125464

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved

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Last modified July 4 16:46 EDT 2022. Contains 355081 sequences. (Running on oeis4.)