A152415 - OEIS

%I #3 Apr 04 2015 10:01:58

%S 2,4,6,10,15,21,26,33,40,50,57,69,79,93,106,116,129,145,158,172,193,

%T 212,232,254,277,298,320,340,367,397,420,443,474,501,534,562,593,629,

%U 666,692,727,760,795,833,869,901,937,980,1029,1071,1115,1160,1209,1249,1299

%N a(n) = A166709(n) + 1.

%C This takes the empty sum into account. Suggested by _M. F. Hasler_.

%K nonn

%O 1,1

%A _N. J. A. Sloane_, Oct 24 2009