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A331252
Triangles with integer sides i <= j <= k sorted by area, and, in case of ties, lexicographically by side lengths (smallest first). The sequence gives middle side j. The other sides are in A331251 and A331253.
9
1, 2, 3, 2, 4, 2, 5, 3, 3, 6, 7, 4, 4, 3, 8, 3, 3, 9, 5, 5, 10, 4, 11, 6, 4, 6, 12, 4, 7, 13, 5, 4, 7, 4, 14, 5, 8, 5, 15, 6, 4, 8, 4, 16, 9, 5, 17, 6, 7, 9, 6, 18, 10, 5, 19, 6, 5, 5, 11, 8, 5, 10, 20, 7, 7, 21, 12, 5, 7, 11, 22, 9, 6, 6, 23, 6, 13, 8, 8, 12
OFFSET
1,2
EXAMPLE
See A331251.
CROSSREFS
Cf. A331251 (shortest side), A331253 (longest side).
Sequence in context: A323236 A319702 A365791 * A162908 A373558 A222817
KEYWORD
nonn
AUTHOR
Hugo Pfoertner, Jan 19 2020
STATUS
approved