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 A147847 Concerning hypotenuses of triangles such that the sum of the two legs is a perfect square. 2
 2, 3, 4, 4, 5, 6, 5, 6, 7, 8, 7, 7, 8, 9, 8, 10, 8, 9, 10, 9, 11, 12, 10, 11, 10, 13, 11, 14, 11, 12, 11, 13, 12, 14, 15, 12, 16, 13, 14, 13, 13, 15, 13, 16, 17, 18, 14, 14, 14, 16, 15, 17, 16, 19, 20, 15, 17, 16, 18, 16, 19, 17, 16 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS The sequence of b's considered in A145906. A094192 is apparently derived by sorting into natural order. LINKS Table of n, a(n) for n=0..62. 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 Cf. A143732. Sequence in context: A125568 A248110 A108872 * A370386 A335572 A268680 Adjacent sequences: A147844 A147845 A147846 * A147848 A147849 A147850 KEYWORD nonn,uned,obsc AUTHOR Paul Curtz, Nov 15 2008 STATUS approved

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Last modified August 11 23:45 EDT 2024. Contains 375082 sequences. (Running on oeis4.)