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a(n)=T(n+1,n), array T given by A048201.
3

%I #7 Jun 05 2021 16:42:13

%S 2,6,11,19,29,43,58,74,95,117,142,168,196,229,263,298,334,372,412,454,

%T 500,548,597,647,700,757,817,879,943,1008,1078,1155,1235,1316,1399,

%U 1484,1570,1660,1751,1843,1943,2047,2154,2262,2378

%N a(n)=T(n+1,n), array T given by A048201.

%F a(n) = A004978(n+2) - 2. - _Sean A. Irvine_, Jun 05 2021

%Y Cf. A004978.

%K nonn

%O 1,1

%A _Clark Kimberling_