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Search: id:A124898
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| A124898 |
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Number of base 17 circular n-digit numbers with adjacent digits differing by 2 or less. |
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+0
1
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| 1, 17, 79, 293, 1267, 5527, 24739, 112143, 513867, 2373647, 11035789, 51580623, 242148559, 1141014203, 5393615257, 25565881003, 121473190683, 578379092367, 2758998721111, 13182804752499, 63081972236317, 302258226703131
(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)+A005191(n+1) for base>=2.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]`-$[(i+1)mod N]`>2)+($[(i+1)mod N]`-$[i]`>2))
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CROSSREFS
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Sequence in context: A097223 A063494 A146594 this_sequence A036429 A126404 A142021
Adjacent sequences: A124895 A124896 A124897 this_sequence A124899 A124900 A124901
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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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