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Search: id:A125329
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| A125329 |
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Number of base 19 circular n-digit numbers with adjacent digits differing by 3 or less. |
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+0
1
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| 1, 19, 121, 619, 3697, 22389, 138973, 874277, 5559985, 35648953, 230069191, 1492690207, 9727027549, 63617931357, 417371683689, 2745447557409, 18100412004049, 119567904627743, 791186114040565, 5243056748156375
(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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Sequence in context: A159851 A157340 A070302 this_sequence A126487 A109669 A164905
Adjacent sequences: A125326 A125327 A125328 this_sequence A125330 A125331 A125332
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KEYWORD
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nonn
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AUTHOR
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Ron Hardin (rhhardin(AT)att.net), Dec 28 2006
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