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.

A187085 Even numbers > 4 as generated by A187072.

Original entry on oeis.org

6, 8, 10, 12, 14, 18, 16, 22, 20, 26, 28, 24, 30, 34, 36, 32, 38, 42, 40, 46, 48, 50, 44, 54, 52, 58, 60, 56, 62, 66, 64, 70, 72, 78, 76, 84, 74, 68, 80, 86, 90, 82, 88, 96, 98, 92, 102, 94, 100, 106, 112, 114, 104, 110, 108, 120, 116, 126, 118, 130, 124, 132, 122, 140, 134, 138, 136, 142, 144, 146, 150, 148, 154, 156, 152, 162, 160, 168, 164, 158
Offset: 1

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Author

Reinhard Zumkeller, Mar 04 2011

Keywords

Comments

a(n) = A187072(n) + A187072(n+1) = 2*A187098(n+2).

Crossrefs

Programs

  • Haskell
    a187085  n = a187085_list !! (n-1)
    a187085_list = zipWith (+) a187072_list $ tail a187072_list