A078360 - OEIS

A078360

Numbers having a unique representation as sum of a positive square and a positive cube.

2, 5, 9, 10, 12, 24, 26, 28, 31, 33, 36, 37, 43, 44, 50, 52, 57, 63, 68, 72, 73, 76, 80, 82, 91, 100, 101, 113, 122, 126, 127, 128, 134, 141, 148, 150, 152, 161, 164, 170, 171, 174, 177, 185, 189, 196, 197, 204, 206, 208, 217, 220, 223, 226, 232, 241, 246, 257

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

A078359(a(n))=1.

LINKS

Table of n, a(n) for n=1..58.

EXAMPLE

10 is a term, as 10 = 3^2 + 1^3 and all other sums of positive squares and positives cubes are not equal 10; 17 is not a term, as 17 = 3^2 + 2^3 = 4^2 + 1^3.

CROSSREFS

Cf. A055394, A054402.

Sequence in context: A100530 A155469 A055394 * A372886 A114995 A047619

Adjacent sequences: A078357 A078358 A078359 * A078361 A078362 A078363

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Nov 25 2002

STATUS

approved