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A107574
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a(n)=middle sidelength of n-th triangle listed at A107572.
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4
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3, 4, 4, 5, 4, 5, 6, 5, 5, 6, 5, 7, 6, 5, 6, 7, 6, 6, 8, 7, 6, 7, 6, 8, 7, 6, 7, 9, 8, 7, 8, 6, 7, 7, 9, 8, 7, 8, 7, 10, 9, 8, 9, 7, 8, 7, 8, 10, 9, 8, 9, 7, 8, 8, 11, 10, 9, 10, 8, 9, 7, 8, 9, 8, 11, 10, 9, 10, 8, 9, 8, 9, 12, 11, 10, 11, 9, 10, 8, 9, 10, 8, 9, 9, 12, 11, 10, 11, 9, 10, 8, 9, 10, 9, 13
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| The first 5 integer-sided scalene triangles (a,b,c) with a<b<c are (2,3,4), (2,4,5), (3,4,5), (2,5,6), (3,4,6), of which the middle sidelengths are 3,4,4,5,4.
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CROSSREFS
| Cf. A107572, A107573, A107575, A107576, A107577, A005044, A070080.
Sequence in context: A158012 A032446 A028949 * A053405 A082090 A133196
Adjacent sequences: A107571 A107572 A107573 * A107575 A107576 A107577
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KEYWORD
| nonn
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AUTHOR
| Clark Kimberling (ck6(AT)evansville.edu), May 16 2005
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