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Search: id:A126532
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| A126532 |
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Number of base 11 n-digit numbers with adjacent digits differing by five or less. |
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+0
1
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| 1, 11, 91, 781, 6691, 57343, 491429, 4211559, 36093157, 309319197, 2650872719, 22718040927, 194694139719, 1668533310731, 14299369323775, 122545928057115, 1050221456858969, 9000422339067177, 77133829015319501
(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 11 differing by four or less A126506, three or less A126479, two or less A126398, one or less A126365.
Sequence in context: A016160 A005062 A125374 this_sequence A117611 A044262 A044643
Adjacent sequences: A126529 A126530 A126531 this_sequence A126533 A126534 A126535
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KEYWORD
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nonn
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AUTHOR
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Ron Hardin (rhh(AT)cadence.com), Dec 28 2006
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