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A126395
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Number of base 8 n-digit numbers with adjacent digits differing by two or less.
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3
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1, 8, 34, 150, 668, 2986, 13362, 59816, 267802, 1199022, 5368412, 24036226, 107618586, 481846232, 2157395218, 9659418342, 43248619100, 193639305850, 866991400098, 3881825980040, 17380302665002, 77817738944382
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| [Empirical] a(base,n)=a(base-1,n)+5^(n-1) for base>=2n-1; a(base,n)=a(base-1,n)+5^(n-1)-2 when base=2n-2
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PROG
| (S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-2](($[i]`-$[i+1]`>2)+($[i+1]`-$[i]`>2))
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CROSSREFS
| Cf. Base 8 differing by one or less A126362.
Sequence in context: A124843 A082840 A101644 * A203445 A158991 A136016
Adjacent sequences: A126392 A126393 A126394 * A126396 A126397 A126398
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KEYWORD
| nonn,base
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AUTHOR
| R. H. Hardin (rhhardin(AT)att.net), Dec 28 2006
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