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Search: id:A126411
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| A126411 |
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Number of base 24 n-digit numbers with adjacent digits differing by two or less. |
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+0
4
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| 1, 24, 114, 550, 2668, 12986, 63348, 309524, 1514230, 7415030, 36339360, 178207260, 874402930, 4292397700, 21079558088, 103555346934, 508877542076, 2501307731338, 12297585994658, 60472695897300, 297423291148782
(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)+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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PROGRAM
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(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
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Cf. Base 24 differing by one or less A126378.
Sequence in context: A064595 A064591 A124952 this_sequence A137799 A114200 A069074
Adjacent sequences: A126408 A126409 A126410 this_sequence A126412 A126413 A126414
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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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