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A125376 Number of base 13 circular n-digit numbers with adjacent digits differing by 5 or less. 0
1, 13, 113, 853, 7333, 64363, 574739, 5174497, 46797333, 424220677, 3850319843, 34968769519, 317694077779, 2886778840153, 26233562935679, 238408390689523, 2166688400848533, 19691415248239135, 178961780093458481 (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..18.

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: A211846 A196862 A021076 * A048545 A164609 A055430

Adjacent sequences:  A125373 A125374 A125375 * A125377 A125378 A125379

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved

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Last modified October 6 04:36 EDT 2022. Contains 357261 sequences. (Running on oeis4.)