A027152 T(n,0) + T(n,1) + ... + T(n,[ n/2 ]), T given by A027144.
1, 1, 5, 7, 21, 31, 123, 209, 601, 971, 3647, 6589, 18565, 31375, 114203, 213073, 593073, 1030675, 3674615, 6997477, 19315165, 34221463, 120206611, 232218425, 637066249, 1144951835, 3976689519, 7765255757, 21202165941, 38528688671
Offset: 0