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Search: id:A116972
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| 1, 21, 85, 281, 873, 2653, 7997, 24033, 72145, 216485, 649509, 1948585, 5845817, 17537517, 52612621, 157837937, 473513889, 1420541749, 4261625333, 12784876089, 38354628361, 115063885181, 345191655645, 1035574967041
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OFFSET
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0,2
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COMMENT
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Number of moves to solve Type 3 Zig-Zag puzzle.
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REFERENCES
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Richard I. Hess, Compendium of Over 7000 Wire Puzzles, privately printed, 1991.
Richard I. Hess, Analysis of Ring Puzzles, booklet distributed at 13-th International Puzzle Party, Amsterdam, Aug 20 1993.
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FORMULA
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a(0)=1, a(n)=3*a(n-1)+4*n+14. - Zak Seidov, Apr 02 2006
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CROSSREFS
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Sequence in context: A041856 A044208 A044589 this_sequence A041858 A063651 A045016
Adjacent sequences: A116969 A116970 A116971 this_sequence A116973 A116974 A116975
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KEYWORD
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nonn
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AUTHOR
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njas, Apr 01 2006
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