%I A034957
%S A034957 1,9,35,91,242,442,833,1273,2024,3306,4464,6586,8897,11137,14288,18762,
%T A034957 24190,28670,35778,42813,49275,59329,69056,81702,98067,112110,124836,
%U A034957 140919,155325,173568,210312,233835,262903,285923,327949,355001,393285
%N A034957 Divide natural numbers in groups with prime p elements and add together.
%C A034957 Natural numbers starting from 0,1,2,3,...
%e A034957 {0,1} #2 S=1; {2,3,4} #3 S=9; {5,6,7,8,9} #5 S=35; {10,11,12,13,14,15,
               16} #7 S=91; etc.
%Y A034957 Cf. A006003, A027441, A034956.
%Y A034957 Sequence in context: A022275 A071398 A005898 this_sequence A002418 A118414 
               A137628
%Y A034957 Adjacent sequences: A034954 A034955 A034956 this_sequence A034958 A034959 
               A034960
%K A034957 nonn
%O A034957 1,2
%A A034957 Patrick De Geest (pdg(AT)worldofnumbers.com), Oct 15 1998.