The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A296795 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A296795

Numbers k such that m = 2*k is the middle side in a Heronian triangle with sides m - 11, m, m + 11.
(history; published version)

#32 by Bruno Berselli at Thu Dec 28 10:34:21 EST 2017

STATUS

proposed

approved

#31 by Michel Marcus at Thu Dec 28 09:58:57 EST 2017

STATUS

editing

proposed

#30 by Michel Marcus at Thu Dec 28 09:58:53 EST 2017

EXAMPLE

The smallest triangle of this type has following sides: 15, 26, 37 has the altitude 12 and is a part of the Pythagorian Pythagorean triangle with sides : 12, 35, 37.

STATUS

proposed

editing

#29 by Colin Barker at Thu Dec 28 08:52:38 EST 2017

STATUS

editing

proposed

#28 by Colin Barker at Thu Dec 28 08:52:08 EST 2017

LINKS

Colin Barker, <a href="/A296795/b296795.txt">Table of n, a(n) for n = 0..1000</a>

STATUS

approved

editing

#27 by N. J. A. Sloane at Tue Dec 26 18:05:11 EST 2017

STATUS

proposed

approved

#26 by Michael De Vlieger at Fri Dec 22 23:10:52 EST 2017

STATUS

editing

proposed

#25 by Michael De Vlieger at Fri Dec 22 23:10:49 EST 2017

MATHEMATICA

CoefficientList[Series[(13 + 14 x + 22 x^2 - 14 x^3 - 13 x^4 - 11 x^5)/(1 - 4 x^3 + x^6), {x, 0, 36}], x] (* Michael De Vlieger, Dec 22 2017 *)

STATUS

proposed

editing

#24 by Jon E. Schoenfield at Fri Dec 22 18:16:58 EST 2017

STATUS

editing

proposed

#23 by Jon E. Schoenfield at Fri Dec 22 18:16:48 EST 2017

NAME

Numbers k such that m = 2*k is the middle side in a Heronian triangle with sides m - 11, m, m + 11.

STATUS

proposed

editing

Discussion

Fri Dec 22

18:16

Jon E. Schoenfield: You're very welcome!