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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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A383214 a(n) = A067434(n) - A383213(n).

Original entry on oeis.org

1, 1, 0, 1, -1, 1, 0, 1, 0, 0, 0, 0, 0, -1, 1, 1, -1, 1, -1, 1, 0, 0, -1, 1, 0, 0, -1, 1, 1, -1, 0, 1, 0, 0, 0, 0, 0, 1, -2, 1, -1, 1, 0, -1, 1, 0, -1, 1, 0, 0, 0, 0, -1, 2, -1, 0, 0, 0, 0, 0, 0, 0, 0, 1, -1, 1, 0, 0, 0, 0, -1, 1, 0, -1, 1, -1, 1, 0, -1, 1
Offset: 1

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Author

Clark Kimberling, Apr 19 2025

Keywords

Comments

Least n such that a(n) = -3 is 7055; least n such than a(n) = 3 is 740.

Crossrefs

Cf. A000984, A067634, A383213.

Programs

  • Mathematica
    u = Table[PrimeNu[Binomial[2 n, n]], {n,  200}]     (* A067434 *)
v = Table[PrimeNu[Binomial[2 n, n + 1]], {n,  200}] (* A383213 *)
u - v
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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