A023659 Convolution of odd numbers and A001950.
2, 11, 32, 70, 131, 220, 342, 502, 705, 957, 1263, 1628, 2058, 2558, 3133, 3788, 4528, 5359, 6286, 7314, 8448, 9693, 11055, 12539, 14150, 15894, 17776, 19801, 21974, 24300, 26785, 29434, 32252, 35245, 38418, 41776, 45324, 49067, 53011
Offset: 1