A048221 - OEIS

%I #8 Jun 06 2021 02:52:38

%S 2,5,18,35,60,94,134,180,232,291,357,430,515,610,710,815,932,1053,

%T 1181,1318,1462,1615,1776,1944,2116,2300,2496,2696,2907,3128,3351,

%U 3581,3817,4062,4318,4582,4852,5131,5419,5719,6031,6346,6665,6991,7323,7665,8015

%N a(n)=T(2n-1,n), array T given by A048212.

%F a(n) = A004979(2*n) - A004979(n). - _Sean A. Irvine_, Jun 05 2021

%Y Cf. A004979.

%K nonn

%O 1,1

%A _Clark Kimberling_

%E More terms from _Sean A. Irvine_, Jun 05 2021