A079320 CATS sequence: cube-add-then-sort variation of RATS (reverse, add then sort) sequence.

1, 3, 68, 13, 222, 35, 25, 378, 11, 1234, 147, 122, 2578, 339, 1124, 349, 558, 6788, 28, 2289, 167, 1129, 13488, 1556, 1267, 1179, 1289, 12448, 237, 22289, 238, 3579, 33389, 1249, 24669, 569, 1459, 35589, 446, 26689, 1347, 5579, 22588, 1179, 23789, 1378

Offset: 2

Author

Michael Joseph Halm, Feb 13 2003

Keywords

• nonn
• base

Examples

			a(8)= 25 because 8^3 + 8 = 512 + 8 = 520, sort(520) = 25.
		

Links

• Harvey P. Dale and Indranil Ghosh, Table of n, a(n) for n = 2..20000 (terms 2..1000 from Harvey P. Dale)
• M. J. Halm, Sequences

Crossrefs

Cf. A004000.

Programs

Mathematica

Array[FromDigits[Sort[IntegerDigits[#^3+#]]]&,50,2] (* Harvey P. Dale, Feb 28 2013 *)

Python

def A079320(n):
    x=str(n+n**3)
    return int("".join(sorted(x))) # Indranil Ghosh, Jan 29 2017

Formula

a(n) = sort_digits(n^3 + n).