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A124894 Number of base 16 circular n-digit numbers with adjacent digits differing by 2 or less. 0
1, 16, 74, 274, 1182, 5146, 22988, 104008, 475702, 2193322, 10178844, 47489128, 222537384, 1046705104, 4938809502, 23367231454, 110821701894, 526680449962, 2507653172738, 11959006821214, 57115337351332, 273132653565388 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

[Empirical] a(base,n)=a(base-1,n)+A005191(n+1) for base>=2.int(n/2)+1

PROG

(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>2)+($[(i+1)mod N]`-$[i]`>2))

CROSSREFS

Sequence in context: A056633 A098096 A058333 * A126403 A197873 A200786

Adjacent sequences:  A124891 A124892 A124893 * A124895 A124896 A124897

KEYWORD

nonn,base

AUTHOR

R. H. Hardin (rhhardin(AT)att.net), Dec 28 2006

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Last modified February 17 00:09 EST 2012. Contains 205978 sequences.