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A229498 Semiprimes associated with A229480. 1
6, 21, 26, 34, 38, 46, 74, 86, 33, 51, 69, 87, 55, 77, 118, 134, 146, 111, 129, 213, 249, 115, 145, 355, 161, 623, 187, 209, 253, 451, 517, 803, 221, 377, 323, 493, 697, 731, 437, 206, 278, 302, 358, 362, 386, 943, 458, 478, 502, 514, 586, 614, 622, 674 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
None of the semiprimes are squares. - T. D. Noe, Oct 03 2013
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 1..10000
PROG
(PARI) do(lim)=my(v=List(), t); forprime(q=2, sqrtint(lim\10), forprime(p=2, min(sqrtint(lim\q), q), t=eval(Str(p, p*q, q)); if(t>lim, next(2)); if(isprime(t), listput(v, [t, p*q])))); apply(u->u[2], vecsort(Vec(v), 1)) \\ Charles R Greathouse IV, Oct 03 2013
CROSSREFS
Cf. A001358.
Sequence in context: A323917 A327865 A369969 * A164698 A020880 A046467
KEYWORD
nonn,base
AUTHOR
G. L. Honaker, Jr., Oct 01 2013
STATUS
approved

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Last modified March 28 08:22 EDT 2024. Contains 371236 sequences. (Running on oeis4.)