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%I #8 Feb 06 2023 09:58:57
%S 4,8,9,6,18,19,8,32,33,18,30,35,10,50,51,22,46,51,34,38,51,12,72,73,
%T 28,76,81,44,68,81,14,98,99,32,100,105,68,80,105,16,128,129,64,112,
%U 129,38,142,147,60,132,145,18,162,163,82,122,147,72,144,161,42,174,179
%N 3-column rectangular array of near-right obtuse triangles.
%F Row n is the n-th triple (a, b, c), in order of increasing perimeter a+b+c and increasing a, such that a < b < c and a^2 + b^2 - c^2 = -1.
%e First two triples:
%e 4,8,9 (a + b + c = 21; 16 + 64 - 81 = -1)
%e 6,18,19 (a + b + c = 43; 36 + 324 - 361 = -1)
%Y Cf. A108615.
%K nonn,tabf
%O 0,1
%A _Clark Kimberling_, Jun 12 2005