A125353 - OEIS

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A125353

Number of base 16 circular n-digit numbers with adjacent digits differing by 4 or less.

1, 16, 124, 796, 5924, 44916, 348652, 2743036, 21801764, 174565444, 1405459324, 11362215276, 92138276228, 748875775404, 6097017988948, 49701864868956, 405539673414148, 3311264043438796, 27050524930821556, 221065493126829404 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	COMMENTS	`[Empirical] a(base,n)=a(base-1,n)+A025014(n+1) for base>=4.int(n/2)+1`
	PROG	(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>4)+($[(i+1)mod N]`-$[i]`>4))
	CROSSREFS	`Sequence in context: A030508 A006215 A060633 * A126511 A067442 A000485` `Adjacent sequences: A125350 A125351 A125352 * A125354 A125355 A125356`
	KEYWORD	`nonn,base`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net), Dec 28 2006`

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Last modified February 16 09:27 EST 2012. Contains 205904 sequences.