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Search: id:A125387
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| A125387 |
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Number of base 24 circular n-digit numbers with adjacent digits differing by 5 or less. |
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+0
1
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| 1, 24, 234, 1854, 17134, 161174, 1552716, 15165944, 149730374, 1490228262, 14926037054, 150251733634, 1518627112228, 15399490881916, 156574262849028, 1595437555553204, 16285881610118342, 166484261636251310
(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(5) for base>=5.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]`-$[(i+1)mod N]`>5)+($[(i+1)mod N]`-$[i]`>5))
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CROSSREFS
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Sequence in context: A022684 A027275 A027260 this_sequence A126545 A159506 A081863
Adjacent sequences: A125384 A125385 A125386 this_sequence A125388 A125389 A125390
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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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