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 A057843 a(n) = floor(n*tau^2) - 3, where tau = (1+sqrt(5))/2. 2
 -1, 2, 4, 7, 10, 12, 15, 17, 20, 23, 25, 28, 31, 33, 36, 38, 41, 44, 46, 49, 51, 54, 57, 59, 62, 65, 67, 70, 72, 75, 78, 80, 83, 86, 88, 91, 93, 96, 99, 101, 104, 106, 109, 112, 114, 117, 120, 122, 125, 127, 130, 133, 135, 138, 140, 143, 146, 148, 151, 154, 156, 159 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS This sequence and A007064 are very similar - this can be seen if the terms equal to 4 are aligned. - Thomas Baruchel, Nov 04 2003 LINKS Table of n, a(n) for n=1..62. MATHEMATICA Floor[GoldenRatio^2 Range[70]]-3 (* Harvey P. Dale, May 15 2014 *) PROG (PARI) a(n)=(3+sqrt(5))*n\2 - 3 \\ Charles R Greathouse IV, Jan 23 2015 CROSSREFS Subtract 2 from each term of A003622. Complement of A058065. Sequence in context: A164903 A285968 A218772 * A047539 A190521 A186224 Adjacent sequences: A057840 A057841 A057842 * A057844 A057845 A057846 KEYWORD sign AUTHOR N. J. A. Sloane, Nov 24 2000 STATUS approved

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Last modified September 23 07:23 EDT 2023. Contains 365534 sequences. (Running on oeis4.)