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A125393 Number of base 30 circular n-digit numbers with adjacent digits differing by 5 or less. 0
1, 30, 300, 2400, 22480, 213980, 2086194, 20618474, 205995176, 2075017056, 21039273910, 214459190558, 2195640154606, 22561546844854, 232553020432522, 2403380361008210, 24894780141389160, 258371506856822688 (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: A129029 A101381 A061605 * A126551 A042750 A074994

Adjacent sequences:  A125390 A125391 A125392 * A125394 A125395 A125396

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved

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Last modified October 21 01:08 EDT 2019. Contains 328291 sequences. (Running on oeis4.)