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 A298079 The number of triangles (up to congruence) with integer coordinates and perimeter in [n, n+1). 3
 1, 2, 2, 6, 7, 11, 15, 26, 24, 42, 41, 66, 60, 83, 99, 126, 127, 176, 179, 219, 217, 302, 283, 374, 366, 456, 446, 551, 573, 640, 667, 808, 805, 938, 936, 1123, 1078, 1286, 1276, 1464 (list; graph; refs; listen; history; text; internal format)
 OFFSET 3,2 LINKS Peter Kagey, Table of n, a(n) for n = 3..149 Peter Kagey, Integer Triangles with perimeter less than n, Programming Puzzles & Code Golf Stack Exchange. Peter Kagey, Haskell program for A298079. EXAMPLE For n = 3, all triangles with perimeter in [3, 4) are congruent to: (0, 0), (0, 1), (1, 0) with perimeter 3.41.... For n = 4, all triangles with perimeter in [4, 5) are congruent to: (0, 0), (0, 1), (1, 2) with perimeter 4.65..., or (0, 0), (0, 2), (2, 0) with perimeter 4.82.... For n = 5, all triangles with perimeter in [5, 6) are congruent to: (0, 0), (0, 2), (1, 2) with perimeter 5.23..., or (0, 0), (1, 2), (2, 1) with perimeter 5.88.... CROSSREFS Cf. A051518, A298121. Sequence in context: A177852 A079811 A097869 * A295783 A060303 A099577 Adjacent sequences:  A298076 A298077 A298078 * A298080 A298081 A298082 KEYWORD nonn,more AUTHOR Peter Kagey, Jan 11 2018 STATUS approved

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Last modified February 16 21:31 EST 2020. Contains 331975 sequences. (Running on oeis4.)