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Revision History for A293404 (Bold, blue-underlined text is an addition; faded, red-underlined text is a deletion.)

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Least integer k such that k/n^2 > (3 + sqrt(5))/2 (the golden ratio).
(history; published version)
#4 by Susanna Cuyler at Wed Oct 11 21:56:58 EDT 2017
STATUS

proposed

approved

#3 by Clark Kimberling at Wed Oct 11 21:53:37 EDT 2017
STATUS

editing

proposed

#2 by Clark Kimberling at Wed Oct 11 21:26:13 EDT 2017
NAME

allocated for Clark KimberlingLeast integer k such that k/n^2 > (3 + sqrt(5))/2 (the golden ratio).

DATA

0, 3, 11, 24, 42, 66, 95, 129, 168, 213, 262, 317, 377, 443, 514, 590, 671, 757, 849, 946, 1048, 1155, 1268, 1385, 1508, 1637, 1770, 1909, 2053, 2202, 2357, 2516, 2681, 2852, 3027, 3208, 3393, 3585, 3781, 3983, 4189, 4401, 4619, 4841, 5069, 5302, 5540, 5784

OFFSET

0,2

LINKS

Clark Kimberling, <a href="/A293404/b293404.txt">Table of n, a(n) for n = 0..1000</a>

FORMULA

a(n) = ceiling(r*n^2), where r = (3 + sqrt(5))/2.

a(n) = A293403(n) + 1 for n > 0.

MATHEMATICA

z = 120; r = 1+GoldenRatio;

Table[Floor[r*n^2], {n, 0, z}]; (* A293403 *)

Table[Ceiling[r*n^2], {n, 0, z}]; (* A293404 *)

Table[Round[r*n^2], {n, 0, z}]; (* A293405 *)

CROSSREFS
KEYWORD

allocated

nonn,easy

AUTHOR

Clark Kimberling, Oct 11 2017

STATUS

approved

editing

#1 by Clark Kimberling at Sun Oct 08 16:56:05 EDT 2017
NAME

allocated for Clark Kimberling

KEYWORD

allocated

STATUS

approved