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.

A014461 Odd numbers in the triangle of Eulerian numbers that are not 1.

Original entry on oeis.org

11, 11, 57, 57, 1191, 1191, 247, 4293, 15619, 15619, 4293, 247, 1013, 1013, 152637, 152637, 4083, 478271, 10187685, 10187685, 478271, 4083, 423281535, 423281535, 16369, 2571742175, 12843262863, 12843262863, 2571742175, 16369, 13824739
Offset: 1

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References

  • R. L. Graham, D. E. Knuth and O. Patashnik, Concrete Mathematics. Addison-Wesley, Reading, MA, 1990, p. 254.

Crossrefs

Cf. A008292.

Programs

  • Mathematica
    Select[Select[Flatten[Table[Plus@@Table[(-1)^k Binomial[i + 1, k] (j - k)^i, {k, 0, j}], {i, 1, 18}, {j, 1, i}]], OddQ], #!= 1 &] (* Vincenzo Librandi, Nov 19 2018 *)

Extensions

More terms from James Sellers
Offset corrected by Mohammad K. Azarian, Nov 19 2008