1,1
Table of n, a(n) for n=1..20.
First semiprime is 4; 4 is 2*2; 26=4+22.
Second semiprime is 6; 6 is 2*3 (23) or 3*2 (32); 38=6+32.
...
Eighth semiprime is 22; 22 is 2*11 (211) or 11*2 (112); 233=22+211.
Sequence in context: A034106 A213012 A171745 * A045092 A106551 A178662
Adjacent sequences: A106550 A106551 A106552 * A106554 A106555 A106556
base,easy,nonn
Eric Angelini, May 09 2005
approved
