The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A155562 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A155562

Intersection of A001481 and A002479: N = a^2 + b^2 = c^2 + 2d^2 for some integers a,b,c,d.
(history; published version)

#12 by Alois P. Heinz at Sat Jul 20 12:26:30 EDT 2019

STATUS

proposed

approved

#11 by Michel Marcus at Sat Jul 20 10:08:48 EDT 2019

STATUS

editing

proposed

#10 by Michel Marcus at Sat Jul 20 10:08:42 EDT 2019

COMMENTS

Contribution from _From _Warut Roonguthai_, Oct 13 2009: (Start)

STATUS

proposed

editing

#9 by Michael De Vlieger at Sat Jul 20 09:49:01 EDT 2019

STATUS

editing

proposed

#8 by Michael De Vlieger at Sat Jul 20 09:49:00 EDT 2019

LINKS

Andrew D. Ionaşcu, <a href="http://www.kurims.kyoto-u.ac.jp/EMIS/journals/ASUO/mathematics/anale2019vol2/00_Ionascu.pdf">Intersecting semi-disks and the synergy of three quadratic forms</a>, An. Şt. Univ. Ovidius Constantą, (2019) Vol. 27, Issue 2, 5-13.

STATUS

proposed

editing

#7 by Michael De Vlieger at Sat Jul 20 09:41:08 EDT 2019

STATUS

editing

proposed

#6 by Michael De Vlieger at Sat Jul 20 09:41:06 EDT 2019

LINKS

STATUS

approved

editing

#5 by Charles R Greathouse IV at Sat Jul 14 11:32:23 EDT 2012

AUTHOR

_M. F. Hasler (www.univ-ag.fr/~mhasler), _, Jan 24 2009

Discussion

Sat Jul 14

11:32

OEIS Server: https://oeis.org/edit/global/1815

#4 by Russ Cox at Fri Mar 30 18:55:27 EDT 2012

COMMENTS

Contribution from _Warut Roonguthai (warut822(AT)yahoo.com), _, Oct 13 2009: (Start)

Discussion

Fri Mar 30

18:55

OEIS Server: https://oeis.org/edit/global/276

#3 by N. J. A. Sloane at Sun Jul 11 03:00:00 EDT 2010

KEYWORD

easy,nonn,new

AUTHOR

M. F. Hasler (MHasler(AT)www.univ-ag.fr/~mhasler), Jan 24 2009