A125350 - OEIS

This site is supported by donations to The OEIS Foundation.

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.

Other ways to donate

A125350

Number of base 13 circular n-digit numbers with adjacent digits differing by 4 or less.

1, 13, 97, 613, 4457, 33063, 250669, 1923655, 14884769, 115789951, 903866897, 7071440807, 55403165585, 434470766327, 3409117220977, 26760021485703, 210104387835521, 1649871912782039, 12957097087570897, 101763543017243975 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,2`
	COMMENTS	`[Empirical] a(base,n)=a(base-1,n)+A025014(n+1) for base>=4.int(n/2)+1`
	LINKS	`Table of n, a(n) for n=0..19.`
	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: A275879 A160554 A211388 * A049294 A198480 A126508` `Adjacent sequences: A125347 A125348 A125349 * A125351 A125352 A125353`
	KEYWORD	`nonn,base`
	AUTHOR	`R. H. Hardin, Dec 28 2006`
	STATUS	`approved`

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 7 20:33 EST 2019. Contains 329849 sequences. (Running on oeis4.)