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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A116047 n+phi(n)+phi(phi(n)) is a brilliant number (A078972).

Original entry on oeis.org

2, 3, 6, 7, 8, 11, 73, 91, 93, 105, 109, 119, 127, 151, 157, 185, 195, 209, 223, 225, 229, 249, 289, 303, 325, 355, 371, 385, 395, 397, 401, 417, 473, 495, 545, 559, 589, 641, 665, 673, 681, 699, 709, 779, 795, 815, 821, 901, 905, 1007, 1041, 1061, 1065
Offset: 1

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Author

Giovanni Resta, Feb 13 2006

Keywords

Examples

			779+phi(779)+phi(phi(779)) = 1691 = 19*89.

Crossrefs

Cf. A078972, A116046.
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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