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Search: id:A125333
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| A125333 |
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Number of base 23 circular n-digit numbers with adjacent digits differing by 3 or less. |
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+0
1
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| 1, 23, 149, 767, 4621, 28193, 176297, 1117041, 7154253, 46194005, 300221819, 1961587475, 12873380521, 84800014153, 560377791731, 3713279813807, 24664451887709, 164170230029821, 1094761428071549, 7312336791110657
(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)+A025012(n+1) for base>=3.int(n/2)+1
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PROGRAM
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(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>3)+($[(i+1)mod N]`-$[i]`>3))
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CROSSREFS
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Adjacent sequences: A125330 A125331 A125332 this_sequence A125334 A125335 A125336
Sequence in context: A139175 A055827 A142902 this_sequence A126491 A142044 A142935
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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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