1,1

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

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).

Sequence in context: A111148 A125216 A058505 * A146475 A307217 A100556

Adjacent sequences: A133760 A133761 A133762 * A133764 A133765 A133766

easy,nonn

Randy L. Ekl, Jan 01 2008

approved