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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A030641 a(1) = 6; for n > 1, a(n) = product of next 2 primes after a(n-1).

Original entry on oeis.org

6, 77, 6557, 43112347, 1858675670994257, 3454675249946148511864052376019, 11934781082590483693525046199489720199194471433440678070422853
Offset: 1

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Author

N. J. A. Sloane

Keywords

Examples

			The 2 primes after 77 are 79, 83, so next term is 79*83 = 6557.

Crossrefs

Cf. A030661, A030642.

Programs

  • Maple
    A030641 := proc(n)
    option remember ;
    if n = 1 then
        6;
    else
        A030661(procname(n-1)) ;
    end if;
end proc:
seq(A030641(n), n=1..6) ;  # R. J. Mathar, Aug 09 2019
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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