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 A127711 Inverse of the triangle A(n,k) = 1/F(n+1) if k <= n <= 2k, 0 otherwise. 2
 1, 0, 1, 0, -1, 2, 0, 1, -2, 3, 0, 0, 0, -3, 5, 0, -1, 2, 0, -5, 8, 0, 0, 0, 0, 0, -8, 13, 0, 1, -2, 3, 0, 0, -13, 21, 0, 0, 0, 0, 0, 0, 0, -21, 34, 0, 0, 0, -3, 5, 0, 0, 0, -34, 55, 0, 0, 0, 0, 0, 0, 0, 0, 0, -55, 89, 0, -1, 2, 0, -5, 8, 0, 0, 0, 0, -89, 144 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,6 COMMENTS It is conjectured that all elements of this triangle are integers. Row sums are A127712. LINKS Table of n, a(n) for n=0..77. EXAMPLE Triangle begins 1; 0, 1; 0, -1, 2; 0, 1, -2, 3; 0, 0, 0, -3, 5; 0, -1, 2, 0, -5, 8; 0, 0, 0, 0, 0, -8, 13; 0, 1, -2, 3, 0, 0, -13, 21; 0, 0, 0, 0, 0, 0, 0, -21, 34; 0, 0, 0, -3, 5, 0, 0, 0, -34, 55; 0, 0, 0, 0, 0, 0, 0, 0, 0, -55, 89; 0, -1, 2, 0, -5, 8, 0, 0, 0, 0, -89, 144; 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -144, 233; Triangle is the inverse of the triangle 1; 0, 1; 0, 1/2, 1/2; 0, 0, 1/3, 1/3; 0, 0, 1/5, 1/5, 1/5; 0, 0, 0, 1/8, 1/8, 1/8; 0, 0, 0, 1/13, 1/13, 1/13, 1/13; 0, 0, 0, 0, 1/21, 1/21, 1/21, 1/21; 0, 0, 0, 0, 1/34, 1/34, 1/34, 1/34, 1/34; CROSSREFS Sequence in context: A327853 A080099 A268040 * A336937 A069584 A199238 Adjacent sequences: A127708 A127709 A127710 * A127712 A127713 A127714 KEYWORD sign,tabl AUTHOR Paul Barry, Jan 24 2007 STATUS approved

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Last modified June 8 00:26 EDT 2023. Contains 363157 sequences. (Running on oeis4.)