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 1-2 of 2 results.

A166034 Primes which are equal to the sum of three consecutive primes minus 2.

Original entry on oeis.org

13, 29, 47, 107, 157, 197, 233, 317, 347, 563, 587, 631, 659, 677, 769, 787, 827, 839, 881, 929, 983, 1013, 1031, 1097, 1117, 1283, 1301, 1531, 1583, 1609, 1733, 1777, 1847, 1889, 1913, 2099, 2153, 2213, 2267, 2477, 2969, 3083, 3119, 3137, 3191, 3217
Offset: 1

Views

Author

Juri-Stepan Gerasimov, Oct 05 2009

Keywords

Examples

			a(1)=3+5+7-2=13; a(2)=7+11+13-2=29; a(3)=13+17+19-2=47.
		

Crossrefs

Programs

  • Mathematica
    Select[Table[Sum[Prime[k], {k, n , n + 2}] - 2, {n, 1, 100}], PrimeQ] (* G. C. Greubel, Apr 24 2016 *)
    Select[Total/@Partition[Prime[Range[300]],3,1]-2,PrimeQ] (* Harvey P. Dale, Dec 31 2018 *)

Extensions

1997 removed and 2267 added by R. J. Mathar, Oct 08 2009

A234973 Primes that are 6 plus the sum of three consecutive primes.

Original entry on oeis.org

29, 37, 47, 89, 103, 127, 137, 149, 179, 193, 229, 241, 257, 293, 307, 317, 401, 431, 463, 509, 557, 571, 587, 613, 719, 809, 823, 863, 937, 947, 967, 991, 1021, 1039, 1193, 1213, 1277, 1291, 1321, 1373, 1439, 1483, 1499, 1559, 1709, 1723, 1741, 1873, 1949, 1979
Offset: 1

Views

Author

Vincenzo Librandi, Jan 02 2014

Keywords

Comments

Primes of the form 6+A034961(k).

Crossrefs

Programs

  • Mathematica
    Select[Total[#] + 6&/@Partition[Prime[Range[200]], 3, 1], PrimeQ]
Showing 1-2 of 2 results.