A124076 Numbers of the form Abs[m^m - n^n], where integers m,n>0.

0, 3, 23, 26, 229, 252, 255, 2869, 3098, 3121, 3124, 43531, 46400, 46629, 46652, 46655, 776887, 820418, 823287, 823516, 823539, 823542, 15953673, 16730560, 16774091, 16776960, 16777189, 16777212, 16777215, 370643273, 386596946

Offset: 1

Author

Alexander Adamchuk, Nov 24 2006

Keywords

• nonn

Comments

Prime a(n) are listed in A068146(n) = {3, 23, 229, 3121, 776887, 16774091, 275311670611, ...}.

Crossrefs

Cf. A066846 = Integers of the form m^m + n^n, m and n = positive integers. Cf. A068146 = Primes of the form a^a - b^b.

Programs

Mathematica

Take[Intersection[Flatten[Table[Abs[x^x-y^y], {x, 1, 12}, {y, 1, 12}]]], 50]