A194660 Numbers which can be written with their digits in order and only addition and cube operator.

153, 224, 226, 243, 370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 407, 512, 517, 518, 736, 739, 1125, 1216, 1456, 1459, 1547, 1674, 1729, 2205, 2240, 2241, 2242, 2243, 2244, 2245, 2246, 2247, 2248, 2249, 2752, 2759, 2773, 3259, 3527, 3925

Offset

1,1

Links

Table of n, a(n) for n=1..44.

Erich Friedman, Problem of the month August 2003

Example

Let us consider parentheses as cubing operator.
153 = 1^3 + 5^3 + 3^3.
224 = 2^3 + (2 + 4)^3.
226 = 2 + 2^3 + 6^3.
243 = (2 + 4)^3 + 3^3.

Crossrefs

Sequence in context: A104810 A352222 A253023 * A348938 A159294 A332228

Adjacent sequences: A194657 A194658 A194659 * A194661 A194662 A194663

Keyword

nonn,base

Author

Kausthub Gudipati, Sep 01 2011

Status

approved