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Search: id:A125386
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| A125386 |
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Number of base 23 circular n-digit numbers with adjacent digits differing by 5 or less. |
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+0
1
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| 1, 23, 223, 1763, 16243, 152373, 1463803, 14257189, 140352907, 1392763463, 13907164503, 139550545465, 1405796327995, 14206023882853, 143917558809065, 1460937452350923, 14854348570127835, 151231000353544565
(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: A110028 A117608 A038514 this_sequence A091628 A126544 A142490
Adjacent sequences: A125383 A125384 A125385 this_sequence A125387 A125388 A125389
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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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