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.

A072673 Primes of form prime(n)*prime(2*n)+prime(n)+prime(2*n).

Original entry on oeis.org

11, 31, 83, 359, 1487, 4283, 4751, 5471, 7127, 12527, 41183, 66863, 71339, 85247, 186119, 274223, 290987, 338687, 373859, 386219, 400679, 465299, 490643, 663407, 720791, 827147, 883739, 1096127, 1124603
Offset: 1

Views

Author

Reinhard Zumkeller, Jun 30 2002

Keywords

Examples

			A000040(236) = 1487 = 1403+23+61 = 23*61+23+61 = A000040(9)*A000040(18)+A000040(9)+A000040(18), therefore 1487 is a term.
		

Crossrefs

Programs

  • Mathematica
    p[n_]:=Module[{p1=Prime[n],p2=Prime[2n]},p1*p2+p1+p2]; Select[ Array[ p,200],PrimeQ] (* Harvey P. Dale, Jul 14 2014 *)