The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A065565 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A065565

a(n) = floor((5/4)^n).
(history; published version)

#38 by Michael De Vlieger at Sat May 18 23:43:42 EDT 2024

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proposed

approved

#37 by Jon E. Schoenfield at Sat May 18 20:09:50 EDT 2024

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editing

proposed

#36 by Jon E. Schoenfield at Sat May 18 20:09:34 EDT 2024

COMMENTS

a(n) is also the number of the circle curvature (rounded down) inscribing of the circle inscribed in the n-th 3:4:5 triangle arranged as in a spiral form. See as shown in the illustration in the links section. - Kival Ngaokrajang, Aug 21 2013

LINKS

Kival Ngaokrajang, <a href="/A065565/a065565.jpg">Illustration of some initial terms</a>.

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approved

editing

#35 by Joerg Arndt at Mon Nov 20 03:29:55 EST 2017

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reviewed

approved

#34 by Michel Marcus at Mon Nov 20 00:17:47 EST 2017

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proposed

reviewed

#33 by Jon E. Schoenfield at Sun Nov 19 22:13:57 EST 2017

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editing

proposed

#32 by Jon E. Schoenfield at Sun Nov 19 22:13:53 EST 2017

CROSSREFS

Cf. A064628 . - Tomohiro Yamada, Apr 23 2017

#31 by Jon E. Schoenfield at Sun Nov 19 22:13:41 EST 2017

NAME

Floora(n) = floor((5/4)^n).

LINKS

Arturas Dubickas, Aivaras Novikas, <a href="https://doi.org/10.1007/s00209-005-0827-4">Integer parts of powers of rational numbers</a>, Math. Z. 251 (2005), 635--648, available from <a href="http://www.mif.vu.lt/~dubickas/files/dvifai/suaivaru.pdf">the first author's page</a>.

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approved

editing

#30 by N. J. A. Sloane at Sun Apr 23 00:59:57 EDT 2017

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proposed

approved

#29 by Michel Marcus at Sun Apr 23 00:54:24 EDT 2017

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editing

proposed