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Search: id:A125348
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| A125348 |
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Number of base 11 circular n-digit numbers with adjacent digits differing by 4 or less. |
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+0
1
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| 1, 11, 79, 491, 3479, 25161, 185353, 1377877, 10296415, 77159957, 579124519, 4350292705, 32693711237, 245763900549, 1847696428671, 13892325835221, 104456760543551, 785430024706513, 5905865012106589, 44408109269422365
(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)+A025014(n+1) for base>=4.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]`-$[(i+1)mod N]`>4)+($[(i+1)mod N]`-$[i]`>4))
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CROSSREFS
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Sequence in context: A026848 A026864 A101028 this_sequence A126506 A026897 A021024
Adjacent sequences: A125345 A125346 A125347 this_sequence A125349 A125350 A125351
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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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