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Search: id:A126529
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| A126529 |
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Number of base 8 n-digit numbers with adjacent digits differing by five or less. |
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+0
1
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| 1, 8, 58, 426, 3124, 22914, 168066, 1232708, 9041498, 66316346, 486408084, 3567639634, 26167436306, 191929340708, 1407737135338, 10325278224266, 75732441613044, 555471977422754, 4074200053901346, 29882886543125508
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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[Empirical] a(base,n)=a(base-1,n)+11^(n-1) for base>=5n-4; a(base,n)=a(base-1,n)+11^(n-1)-2 when base=5n-5
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PROGRAM
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(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-2](($[i]`-$[i+1]`>5)+($[i+1]`-$[i]`>5))
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CROSSREFS
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Cf. Base 8 differing by four or less A126503, three or less A126476, two or less A126395, one or less A126362.
Sequence in context: A162272 A037532 A062236 this_sequence A039759 A047867 A002538
Adjacent sequences: A126526 A126527 A126528 this_sequence A126530 A126531 A126532
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KEYWORD
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nonn
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AUTHOR
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Ron Hardin (rhhardin(AT)att.net), Dec 28 2006
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