cp's OEIS Frontend

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.

A072595 Numbers k such that A072594(k) = 0.

Original entry on oeis.org

4, 9, 16, 25, 36, 49, 64, 70, 81, 100, 121, 144, 169, 196, 225, 256, 280, 289, 324, 361, 400, 441, 484, 529, 576, 625, 630, 646, 676, 729, 784, 841, 900, 961, 1024, 1089, 1120, 1156, 1225, 1296, 1369, 1444, 1521, 1600, 1681, 1750, 1764, 1798, 1849, 1936
Offset: 1

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Author

Reinhard Zumkeller, Jun 23 2002

Keywords

Comments

All squares are terms, but also 70 is a term, see example, A072596.

Examples

			A072594(70) = A072594(2*5*7) = A072594(2) 'xor' A072594(5) 'xor' A072594(7) = '010' xor '101' xor '111' = '000' = 0.
		

Crossrefs

Cf. A000290.

Programs

  • Haskell
    a072595 n = a072595_list !! (n-1)
    a072595_list = filter ((== 0) . a072594) [1..]
    -- Reinhard Zumkeller, Nov 17 2012