A344804 Numbers that are the sum of two cubes in exactly three ways.

87539319, 119824488, 143604279, 175959000, 327763000, 700314552, 804360375, 958595904, 1148834232, 1407672000, 1840667192, 1915865217, 2363561613, 2622104000, 3080802816, 3235261176, 3499524728, 3623721192, 3877315533, 4750893000, 5544709352, 5602516416

Offset

1,1

Links

Sean A. Irvine, Table of n, a(n) for n = 1..1584

Example

87539319 is a term because 87539319 = 167^3 + 436^3 = 22^3 + 423^3 = 255^3 + 414^3 (3 representations).
6963472309248 is not a term because 6963472309248 = 2421^3 + 19083^3 = 5436^3 + 18948^3 = 10200^3 + 18072^3 = 13322^3 + 16630^3 (4 representations).  This is the first difference between this sequence and A018787.

Crossrefs

Cf. A018787, A025286, A025397, A343708, A345865.

Sequence in context: A138030 A104964 A018787 * A003825 A114259 A234981

Adjacent sequences: A344801 A344802 A344803 * A344805 A344806 A344807

Keyword

nonn

Author

Sean A. Irvine, Jun 14 2021

Status

approved