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A143732 Concerning hypotenuses of triangles such that the sum of the two legs is a perfect square. 2
1, 1, 3, 1, 3, 5, 1, 1, 5, 7, 3, 1, 5, 7, 3, 9, 1, 5, 7, 1, 9, 11, 3, 7, 1, 11, 5, 13, 3, 7, 1, 9, 5, 11, 13, 1, 15, 7, 9, 5, 3, 11, 1, 13, 15, 17, 5, 3, 1, 11, 7, 13, 9, 17, 19, 1, 11, 7, 13, 5, 15, 9, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

The sequence of a's considered in A145906.

LINKS

Table of n, a(n) for n=1..63.

M. de Frenicle, Methode pour trouver la solutions des problemes par les exclusions, in: Divers ouvrages de mathematiques et de physique par messieurs de l'academie royale des sciences, (1693) pp 1-44, Table on page 31.

EXAMPLE

(a,b,c,d,e,f,g,h) = (1,2,1,3,1,5,4,9) with N=7 or  (1,3,2,5,7,13,6,19) with N=17 or (3,4,1,5,7,17,10,27) with N=23 or (1,4,3,7,17,25,8,33) with N=31.

CROSSREFS

Sequence in context: A076157 A087493 A118125 * A130465 A348417 A272120

Adjacent sequences:  A143729 A143730 A143731 * A143733 A143734 A143735

KEYWORD

nonn,uned

AUTHOR

Paul Curtz, Aug 30 2008

STATUS

approved

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Last modified January 20 12:55 EST 2022. Contains 350472 sequences. (Running on oeis4.)