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.

A353022 Products of four distinct primes between twin primes.

Original entry on oeis.org

462, 570, 858, 1230, 1290, 1302, 1482, 1722, 2130, 3390, 3930, 4002, 4218, 4242, 4422, 5010, 5478, 5502, 5658, 6690, 6870, 7458, 7878, 8430, 8862, 9042, 9462, 9858, 9930, 10038, 10302, 11058, 11118, 11490, 11778, 13002, 13710, 13830, 13902, 14010, 15270, 15738
Offset: 1

Views

Author

Massimo Kofler, Apr 17 2022

Keywords

Examples

			462 = 2*3*7*11 between 461 and 463 (twin primes);
570 = 2*3*5*19 between 569 and 571;
858 = 2*3*11*13 between 857 and 859;
1230 = 2*3*5*41 between 1229 and 1231.
		

Crossrefs

Intersection of A014574 and A046386.
Cf. A001097.

Programs

  • Mathematica
    Select[Range[20000], And @@ PrimeQ[# + {-1, 1}] && FactorInteger[#][[;; , 2]] == {1, 1, 1, 1} &] (* Amiram Eldar, Apr 17 2022 *)