Search: id:A134235
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%I A134235
%S A134235 1,4,2,5,7,3,6,8,10,4,7,9,11,13,5,8,10,12,14,16,6,9,11,13,15,17,19,7,10,
%T A134235 12,14,16,18,20,22,8,11,13,15,17,19,21,23,25,9,12,14,16,18,20,22,24,26,
%U A134235 28,10
%N A134235 Triangle read by rows: a(1) = 1; then n-th row = n terms of (n+2), (n+4), 
               (n+6),...n.
%C A134235 Row sums = the hexagonal numbers, A000384: (1, 6, 15, 28, 45, 66, 91,
               ...).
%e A134235 First few rows of the triangle are:
%e A134235 1;
%e A134235 4, 2;
%e A134235 5, 7, 3;
%e A134235 6, 8, 10, 4;
%e A134235 7, 9, 11, 13, 5;
%e A134235 8, 10, 12, 14, 16, 6;
%e A134235 9, 11, 13, 15, 17, 19, 7;
%e A134235 ...
%Y A134235 Cf. A000384.
%Y A134235 Sequence in context: A035584 A003572 A020849 this_sequence A159979 A112962 
               A163358
%Y A134235 Adjacent sequences: A134232 A134233 A134234 this_sequence A134236 A134237 
               A134238
%K A134235 nonn,tabl
%O A134235 1,2
%A A134235 Gary W. Adamson (qntmpkt(AT)yahoo.com), Oct 14 2007

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