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A133763 Odd composite numbers such that the sum of any two terms, plus 1, is composite. 0
9, 15, 35, 39, 75, 119, 125, 209, 249, 279, 285, 287, 435, 545, 749, 779, 825, 939, 1065, 1469, 1505, 1635, 1655, 2525, 3107, 3339, 3689, 3705, 3999, 4569, 4905, 5175, 6125, 6419, 7475, 8055, 8855, 9449, 9659, 10239, 11379, 14069, 15135, 16169, 20699 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..45.

EXAMPLE

35 is a term in the sequence because 35 is an odd composite, 35+9+1=45 is composite and 35+15+1=51 is composite. 33 is not a term in the sequence because 33+9+1 is prime (43).

CROSSREFS

Sequence in context: A111148 A125216 A058505 * A146475 A307217 A100556

Adjacent sequences:  A133760 A133761 A133762 * A133764 A133765 A133766

KEYWORD

easy,nonn

AUTHOR

Randy L. Ekl, Jan 01 2008

STATUS

approved

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Last modified February 26 16:41 EST 2021. Contains 341632 sequences. (Running on oeis4.)