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Search: id:A125342
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| A125342 |
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Number of base 32 circular n-digit numbers with adjacent digits differing by 3 or less. |
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+0
1
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| 1, 32, 212, 1100, 6700, 41252, 260276, 1663260, 10741356, 69920372, 458065232, 3016606328, 19952674708, 132459700444, 882141536432, 5890902558440, 39433549800556, 264525710537012, 1777811473603544, 11968319215904376
(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: A125339 A125340 A125341 this_sequence A125343 A125344 A125345
Sequence in context: A019560 A130811 A119286 this_sequence A126500 A070053 A022146
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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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