A026061 a(n) = (d(n)-r(n))/2, where d = A026060 and r is the periodic sequence with fundamental period (1,0,0,0).

22, 40, 63, 92, 127, 170, 220, 278, 344, 420, 505, 600, 705, 822, 950, 1090, 1242, 1408, 1587, 1780, 1987, 2210, 2448, 2702, 2972, 3260, 3565, 3888, 4229, 4590, 4970, 5370, 5790, 6232, 6695, 7180, 7687, 8218, 8772, 9350, 9952, 10580, 11233, 11912, 12617, 13350, 14110, 14898