A331249 Squared numerator of y-coordinate of 3rd point of n-th triangle with integer sides in a sorted list corresponding to A331247. The y-coordinate is given by sqrt(a(n))/A331248(n).

3, 15, 35, 3, 63, 63, 99, 8, 135, 143, 195, 231, 15, 27, 255, 275, 80, 323, 351, 24, 399, 455, 483, 495, 55, 35, 575, 16, 663, 675, 75, 735, 48, 12, 783, 91, 855, 224, 899, 935, 975, 63, 63, 1023, 1071, 1071, 1155, 135, 1235, 80, 320, 1295, 1311, 21, 1443, 1463

Offset

1,1

Links

Table of n, a(n) for n=1..56.

Example

a(1) = 3 because the 3rd point of the smallest triangle with integer sides (1,1,1) is at (x,y)=(1/2,sqrt(3)/2), A331247(1)=1, A331248(1)=2.
See A331247 for an extended list.

Crossrefs

Cf. A331247, A331248, A331251, A331252, A331253, A331695, A331696, A331697.

Sequence in context: A324303 A009261 A372735 * A102790 A317182 A236693

Adjacent sequences: A331246 A331247 A331248 * A331250 A331251 A331252

Keyword

nonn

Author

Hugo Pfoertner, Jan 23 2020

Status

approved