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Search: id:A124799
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| A124799 |
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Number of base 30 circular n-digit numbers with adjacent digits differing by 1 or less. |
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+0
1
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| 1, 30, 88, 204, 548, 1460, 4006, 11090, 31036, 87468, 248018, 706670, 2021738, 5804010, 16711552, 48241364, 139572076, 404612780, 1175026834, 3417771710, 9955368238, 29035695998, 84784671532, 247838482400, 725183659570
(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)+A002426(n+1) for base>=1.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]`-$[(i+1)mod N]`>1)+($[(i+1)mod N]`-$[i]`>1))
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CROSSREFS
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Sequence in context: A070756 A058903 A103906 this_sequence A126384 A025417 A081807
Adjacent sequences: A124796 A124797 A124798 this_sequence A124800 A124801 A124802
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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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