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a(n) = T(n,n+2), array T given by A049639.
0

%I #7 Aug 06 2021 05:09:11

%S 1,1,4,4,7,7,11,11,17,17,23,23,31,31,41,41,51,51,61,61,75,75,89,89,

%T 105,105,123,123,137,137,153,153,177,177,199,199,223,223,249,249,269,

%U 269,291,291,323,323,353,353,381,381,413,413,443,443,473,473,513,513

%N a(n) = T(n,n+2), array T given by A049639.

%K nonn

%O 0,3

%A _Clark Kimberling_

%E More terms from _Sean A. Irvine_, Aug 06 2021