A125467 - OEIS

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A125467

Number of base 32 circular n-digit numbers with adjacent digits differing by 8 or less.

1, 32, 472, 5720, 80680, 1160552, 17087368, 255059144, 3847010920, 58470091304, 893868096012, 13725977829244, 211491017541784, 3267183192531056, 50573396314085242, 784031120369340530, 12168860465362831864

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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: A010837 A022724 A284339 * A282525 A250319 A000152

Adjacent sequences: A125464 A125465 A125466 * A125468 A125469 A125470

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved