A125459 - OEIS

A125459

Number of base 24 circular n-digit numbers with adjacent digits differing by 8 or less.

1, 24, 336, 3984, 54432, 759744, 10830144, 156223392, 2271228672, 33183608352, 486349645856, 7142175976960, 105014684996352, 1545275154706944, 22749491302298880, 335018397934911744, 4934548094852111360

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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: A188779 A267838 A045543 * A258705 A264454 A077527

Adjacent sequences: A125456 A125457 A125458 * A125460 A125461 A125462

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved