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Search: id:A125467
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| A125467 |
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Number of base 32 circular n-digit numbers with adjacent digits differing by 8 or less. |
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+0
1
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| 1, 32, 472, 5720, 80680, 1160552, 17087368, 255059144, 3847010920, 58470091304, 893868096012, 13725977829244, 211491017541784, 3267183192531056, 50573396314085242, 784031120369340530, 12168860465362831864
(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(8) for base>=8.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]`-$[(i+1)mod N]`>8)+($[(i+1)mod N]`-$[i]`>8))
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CROSSREFS
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Sequence in context: A133348 A010837 A022724 this_sequence A000152 A022069 A085539
Adjacent sequences: A125464 A125465 A125466 this_sequence A125468 A125469 A125470
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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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