

A340038


Numbers that are the sum of a square s and a cube t such that 0 < s <= t.


0



2, 9, 12, 28, 31, 36, 43, 52, 65, 68, 73, 80, 89, 100, 113, 126, 128, 129, 134, 141, 150, 161, 174, 189, 206, 217, 220, 225, 232, 241, 246, 252, 265, 280, 297, 316, 337, 344, 347, 352, 359, 360, 368, 379, 385, 392, 407, 412, 424, 443, 464, 487, 512, 513, 516, 521, 528, 537, 539
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OFFSET

1,1


LINKS

Table of n, a(n) for n=1..59.


EXAMPLE

9 is in the sequence since 1^2 + 2^3 = 1 + 8 = 9, with 0 < 1 <= 8.


MATHEMATICA

Table[If[Sum[(Floor[i^(1/2)]  Floor[(i  1)^(1/2)]) (Floor[(n  i)^(1/3)]  Floor[(n  i  1)^(1/3)]), {i, Floor[n/2]}] > 0, n, {}], {n, 600}] // Flatten


CROSSREFS

Cf. A010052, A010057.
Sequence in context: A183207 A304797 A337360 * A178312 A253608 A126977
Adjacent sequences: A340035 A340036 A340037 * A340039 A340040 A340041


KEYWORD

nonn


AUTHOR

Wesley Ivan Hurt, Dec 26 2020


STATUS

approved



