A076772 Even numbers n representable as the sum of 2 coprime odd composites.

34, 44, 46, 52, 58, 62, 64, 68, 74, 76, 82, 86, 88, 92, 94, 98, 100, 102, 104, 106, 112, 114, 116, 118, 122, 124, 128, 130, 134, 136, 142, 144, 146, 148, 152, 154, 156, 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 182, 184, 186, 188, 190, 192, 194

Offset

0,1

Comments

As the comment in A096076 indicates, 210 is the largest even number not in this sequence. - Franklin T. Adams-Watters, Sep 07 2006

Links

Table of n, a(n) for n=0..54.

Example

34=25+9

Prog

(PARI) v=vector(5000); vc=1; forstep (n=9, 300, 2, if (isprime(n), continue, forstep (j=9, 300, 2, if (gcd(n, j)==1, if (isprime(j), continue, x=n+j; fl=true; for (i=1, vc, if (v[i]==x, fl=false; break)); if (fl==true, v[vc]=x; vc++)))))); print(vc); v=vecsort(vecextract(v, concat("1..", vc-1)))

Crossrefs

Cf. A096076.

Sequence in context: A043240 A044020 A217276 * A359331 A248527 A206262

Adjacent sequences: A076769 A076770 A076771 * A076773 A076774 A076775

Keyword

nonn

Author

Jon Perry, Nov 14 2002

Status

approved