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.

Showing 1-3 of 3 results.

A111736 Distance between k*(n-th prime) and next prime, k=4 case.

Original entry on oeis.org

3, 1, 3, 1, 3, 1, 3, 3, 5, 11, 3, 1, 3, 1, 3, 11, 3, 7, 1, 9, 1, 1, 5, 3, 1, 5, 7, 3, 3, 5, 1, 17, 9, 1, 3, 3, 3, 1, 5, 9, 3, 3, 5, 1, 9, 1, 9, 15, 3, 3, 5, 11, 3, 5, 3, 9, 11, 3, 1, 5, 19, 9, 1, 5, 7, 9, 3, 13, 11, 3, 11, 3, 3, 1, 7, 11, 3, 9, 3, 1, 17, 9, 9, 1, 3, 5, 5, 3, 3, 9, 3, 15, 1, 9, 1, 5, 3, 3, 7
Offset: 1

Views

Author

Zak Seidov, Nov 18 2005

Keywords

Comments

Other cases: k=1 A001223 Differences between consecutive primes, k=2 A059787, k=3 A111735, k=5 A111737, k=6 A111738, k=7 A111739, k=8 A111740, k=9 A111741, k=10 A111742.

Examples

			a(1)=3 because prime(1)=2 and 4*2+3=11
(prime).

Crossrefs

Cf. A001223, A059787, A111735, A111737, A111738, A111739, A111740, A111741, A111742.

Programs

  • Mathematica
    dbkn[n_]:=Module[{t=4*Prime[n]},NextPrime[t]-t]; Array[dbkn,100] (* Harvey P. Dale, Nov 12 2014 *)

A111737 Distance between k*(n-th prime) and next prime, k=5 case.

Original entry on oeis.org

1, 2, 4, 2, 4, 2, 4, 2, 12, 4, 2, 6, 6, 8, 4, 4, 12, 2, 2, 4, 2, 2, 4, 4, 2, 4, 6, 6, 2, 4, 6, 4, 6, 6, 6, 2, 2, 6, 4, 12, 12, 2, 12, 2, 6, 2, 6, 2, 16, 6, 6, 6, 8, 4, 4, 4, 16, 6, 14, 4, 8, 6, 8, 4, 2, 12, 2, 8, 6, 2, 12, 6, 12, 2, 6, 16, 4, 2, 6, 8, 4, 6, 6, 14, 8, 6, 6, 2, 4, 18, 4, 4, 2, 4, 8, 6, 4, 4, 2
Offset: 1

Views

Author

Zak Seidov, Nov 18 2005

Keywords

Comments

Other cases: k=1 A001223 Differences between consecutive primes, k=2 A059787, k=3 A111735, k=4 A111736, k=6 A111738, k=7 A111739, k=8 A111740, k=9 A111741, k=10 A111742.

Examples

			a(1)=1 because prime(1)=2 and 5*2+1=11
(prime).

Crossrefs

Cf. A001223, A059787, A111735, A111736, A111738, A111739, A111740, A111741, A111742.

Programs

  • Mathematica
    NextPrime[#]-#&/@(5Prime[Range[100]]) (* Harvey P. Dale, Oct 21 2011 *)

A111738 Distance between k*(n-th prime) and next prime, k=6 case.

Original entry on oeis.org

1, 1, 1, 1, 1, 1, 1, 13, 1, 5, 5, 1, 5, 5, 1, 13, 5, 1, 7, 5, 1, 5, 1, 7, 5, 1, 1, 1, 5, 5, 7, 1, 1, 5, 13, 1, 5, 5, 7, 1, 13, 1, 5, 5, 5, 7, 11, 23, 5, 7, 1, 5, 1, 5, 1, 1, 5, 1, 1, 7, 1, 1, 5, 1, 1, 5, 1, 5, 1, 5, 11, 7, 1, 1, 7, 11, 5, 1, 5, 5, 7, 5, 5, 11, 13, 1, 5, 7, 1, 11, 1, 5, 5, 7, 5, 1, 7, 11, 25
Offset: 1

Views

Author

Zak Seidov, Nov 18 2005

Keywords

Comments

Other cases: k=1 A001223 Differences between consecutive primes, k=2 A059787, k=3 A111735, k=4 A111736, k=5 A111737, k=7 A111739, k=8 A111740, k=9 A111741, k=10 A111742.

Examples

			a(1)=1 because prime(1)=2 and 6*2+1=13
(prime).

Crossrefs

Cf. A001223, A059787, A111735, A111736, A111737, A111739, A111740, A111741, A111742.
Showing 1-3 of 3 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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