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.

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A289270 Primes p such that 10*p is the sum of two consecutive primes.

Original entry on oeis.org

3, 41, 103, 293, 359, 379, 421, 653, 701, 733, 821, 883, 907, 911, 937, 1009, 1237, 1423, 1567, 1627, 1637, 1931, 1973, 2017, 2129, 2203, 2281, 2417, 2459, 2477, 2647, 2879, 3209, 3271, 3347, 3413, 3539, 3593, 3659
Offset: 1

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Author

Zak Seidov, Jun 30 2017

Keywords

Examples

			10*3 = 30 = prime(6) + prime(7) = 13+17;
10*41 = 410 = prime(46) + prime(47) = 199+211.
		

Crossrefs

Primes p such that m*p is the sum of two consecutive primes: A118134 (m=4), A163487 (m=6), A164132 (m=8), this sequence (m=10), A164134 (m=12).

Programs

  • Mathematica
    Select[Map[Total, Partition[Prime@ Range@ 2200, 2, 1]]/10, PrimeQ] (* Michael De Vlieger, Jun 30 2017 *)
  • PARI
    is(n)=isprime(n) && precprime(5*n)+nextprime(5*n)==10*n \\ Charles R Greathouse IV, Jul 02 2017
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