A125319 - OEIS

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A125319

Number of base 9 circular n-digit numbers with adjacent digits differing by 3 or less.

1, 9, 51, 249, 1387, 7879, 45663, 267367, 1575395, 9316455, 55211811, 327600447, 1945195699, 11554693471, 68652279747, 407952680479, 2424365629955, 14408066169471, 85629681584835, 508919764066431, 3024669695471107 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	COMMENTS	`[Empirical] a(base,n)=a(base-1,n)+A025012(n+1) for base>=3.int(n/2)+1`
	PROG	(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>3)+($[(i+1)mod N]`-$[i]`>3))
	CROSSREFS	`Sequence in context: A061178 A097789 A080624 * A080621 A027218 A155617` `Adjacent sequences: A125316 A125317 A125318 * A125320 A125321 A125322`
	KEYWORD	`nonn,base`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net), Dec 28 2006`

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Last modified February 17 13:24 EST 2012. Contains 206031 sequences.