A274337 Numbers n such that 2^n is not the sum of 5 positive cubes.

0, 1, 2, 3, 4, 5, 7, 8, 10, 11, 14

Offset

1,3

Comments

Corresponding 2^n values are 1, 2, 4, 8, 16, 32, 128, 256, 1024, 2048, 16384.

Links

Table of n, a(n) for n=1..11.

Example

6 is not a term because 2^6 = 1^3 + 1^3 + 2^3 + 3^3 + 3^3.

Mathematica

Log2[#]&/@Complement[2^Range[0, 15], Union[Total/@Tuples[Range[30]^3, 5]]] (* Harvey P. Dale, Sep 12 2020 *)

Crossrefs

Cf. A000079, A003328.

Sequence in context: A180968 A191847 A321290 * A107912 A190850 A066077

Adjacent sequences: A274334 A274335 A274336 * A274338 A274339 A274340

Keyword

nonn,easy,fini,full

Author

Altug Alkan, Jun 22 2016

Status

approved