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Search: id:A125420
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| A125420 |
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Number of base 32 circular n-digit numbers with adjacent digits differing by 6 or less. |
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+0
1
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| 1, 32, 374, 3518, 38706, 433262, 4966664, 57723908, 678179722, 8033230502, 95776176084, 1147881518376, 13816482025668, 166893402582172, 2021942264811766, 24557337125061998, 298887955121933146
(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)+F(6) for base>=6.int(n/2)+1 and F(d) is the largest coefficient in (1+x+...+x^(2d))^n
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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]`-$[(i+1)mod N]`>6)+($[(i+1)mod N]`-$[i]`>6))
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CROSSREFS
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Sequence in context: A158074 A105250 A055752 this_sequence A163690 A087024 A128798
Adjacent sequences: A125417 A125418 A125419 this_sequence A125421 A125422 A125423
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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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