login
For n > 1, a(n) is the least composite number not already used such that the n-th partial sum is prime.
1

%I #5 Dec 05 2013 19:56:35

%S 4,9,6,10,8,16,14,12,18,30,22,24,20,34,36,44,40,26,28,32,46,42,48,38,

%T 52,50,60,54,58,56,72,78,64,62,66,82,68,70,80,84,90,94,86,96,100,74,

%U 106,102,92,76,98,112,108,104,88,114,110,120,124,116,130,126,122,150,136

%N For n > 1, a(n) is the least composite number not already used such that the n-th partial sum is prime.

%C 9 is the only odd member.

%Y Cf. A089391.

%K easy,nonn

%O 1,1

%A _Amarnath Murthy_, Nov 10 2003

%E More terms from _David Wasserman_, Sep 15 2005