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A125411 Number of base 23 circular n-digit numbers with adjacent digits differing by 6 or less. 0
1, 23, 257, 2375, 25485, 278903, 3123797, 35463983, 406719021, 4698846899, 54583098727, 636626661991, 7447641422289, 87321630757865, 1025514521755099, 12058435600011515, 141915563933099549 (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: A010939 A022618 A042018 * A140620 A002681 A240876

Adjacent sequences:  A125408 A125409 A125410 * A125412 A125413 A125414

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved

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Last modified March 21 20:33 EDT 2019. Contains 321382 sequences. (Running on oeis4.)