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A227943 Semiprimes associated with A227942. 2
9, 10, 14, 15, 25, 35, 58, 62, 82, 94, 39, 57, 93, 65, 85, 95, 91, 106, 122, 142, 158, 166, 194, 141, 159, 177, 183, 201, 219, 237, 267, 291, 205, 235, 295, 305, 335, 365, 395, 415, 445, 203, 259, 329, 371, 413, 497, 143, 319, 341, 473, 583, 671, 869, 913, 979 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

PROG

(PARI) issemi(n)=bigomega(n)==2

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(issemi(t), listput(v, [t, p*q])))); apply(u->u[2], vecsort(Vec(v), 1)) \\ Charles R Greathouse IV, Oct 04 2013

CROSSREFS

Cf. A227942, A001358, A229480.

Sequence in context: A261614 A088710 A020199 * A114844 A194593 A005381

Adjacent sequences:  A227940 A227941 A227942 * A227944 A227945 A227946

KEYWORD

nonn,base

AUTHOR

G. L. Honaker, Jr., Oct 03 2013

EXTENSIONS

More terms from Farideh Firoozbakht Oct 04 2013

STATUS

approved

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Last modified August 5 15:41 EDT 2021. Contains 346477 sequences. (Running on oeis4.)