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A134837 Composite numbers where the sum of the smallest prime factor and the largest prime factor is an odd composite. 0
14, 26, 28, 38, 42, 46, 52, 56, 62, 70, 74, 76, 78, 84, 86, 92, 94, 98, 104, 106, 112, 114, 122, 124, 126, 130, 134, 138, 140, 146, 148, 152, 156, 158, 166, 168, 172, 178, 182, 184, 186, 188, 190, 194, 196, 206, 208, 210, 212, 218, 222, 224, 226, 228, 230, 234 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..56.

EXAMPLE

14 is in the sequence as 14=2*7 and 2+7=9, an odd composite; 60 is not, as 60=2^2*3*5 and 2+5 is 7, not composite.

CROSSREFS

Cf. A002808.

Sequence in context: A256573 A030786 A094163 * A105583 A323030 A005277

Adjacent sequences:  A134834 A134835 A134836 * A134838 A134839 A134840

KEYWORD

nonn

AUTHOR

Juri-Stepan Gerasimov, Jan 04 2009

EXTENSIONS

Definition and examples simplified by D. S. McNeil, Dec 10 2009

Corrected and extended by D. S. McNeil, Dec 10 2009

STATUS

approved

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Last modified June 14 04:16 EDT 2021. Contains 345018 sequences. (Running on oeis4.)