A297790 Areas of integer side-length cyclic quadrilaterals, excluding rectangles and kites with two right angles, with integer area.

12, 15, 16, 18, 20, 21, 24, 28, 30, 36, 40, 42, 45, 48, 54, 56, 60, 63, 64, 65, 66, 70, 72, 75, 78, 80, 84, 85, 88, 90, 95, 96, 99, 100, 102, 104, 105, 108, 110, 112, 115, 117, 120, 126, 128, 130, 132, 135, 136, 140, 144, 150, 152, 153, 154, 156, 160, 162, 165, 168, 170, 171, 175, 176, 180, 182, 184, 189, 190, 192, 195, 196, 198, 200, 203, 204, 207, 208, 210, 216, 217, 220, 224, 225, 228, 230, 231, 232, 234, 238

Offset: 1

Author

Gregory Gerard Wojnar, Jan 28 2018

Keywords

• nonn

Links

• Daniel J Hardisky, Omission of Area 64

Crossrefs

Cf. A298907, A298860, A210250, A230136, A131020, A218431, A219225, A233315, A242778, A273691, A273890.

Extensions

Name clarified by Gregory Gerard Wojnar, Oct 31 2018

Missing terms 64, 112, and 162 inserted by Daniel J Hardisky, Apr 24 2025