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A125388 Number of base 25 circular n-digit numbers with adjacent digits differing by 5 or less. 0
1, 25, 245, 1945, 18025, 169975, 1641629, 16074699, 159107841, 1587693061, 15944909855, 160952971853, 1631461695001, 16593111357549, 169235353884807, 1730038601905255, 17719417102045601, 181773198890744037 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

[Empirical] a(base,n)=a(base-1,n)+F(5) for base>=5.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..17.

PROG

(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>5)+($[(i+1)mod N]`-$[i]`>5))

CROSSREFS

Sequence in context: A294290 A352304 A107943 * A126546 A023073 A022685

Adjacent sequences:  A125385 A125386 A125387 * A125389 A125390 A125391

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved

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Last modified July 6 14:10 EDT 2022. Contains 355110 sequences. (Running on oeis4.)