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a(n) = T(n,n), where array T is given by A048212.
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%I #21 Jun 06 2021 02:52:45

%S 2,3,7,13,21,30,42,57,73,93,115,139,164,190,222,255,289,326,364,405,

%T 450,497,545,598,654,713,774,836,900,968,1037,1111,1187,1264,1342,

%U 1423,1507,1594,1682,1771,1867,1965,2065,2168,2273,2379

%N a(n) = T(n,n), where array T is given by A048212.

%C a(1) = 2, a(2) = 3 and a(i) is the next smallest number greater than a(i-1) such that a(i) - a(j) is not a(1) or a(m) or a(m) - a(n) with 1 <= j < i, 1 <= n < m < i. - _Ben Paul Thurston_, Feb 18 2019

%F a(n) = A004979(n + 1) - 1. - _Sean A. Irvine_, Jun 05 2021

%Y Cf. A004979, A048212.

%K nonn

%O 1,1

%A _Clark Kimberling_