A023603 Convolution of A023532 and A001950.
2, 5, 9, 17, 25, 34, 48, 62, 78, 96, 116, 140, 165, 191, 220, 251, 284, 320, 359, 399, 439, 484, 530, 579, 632, 685, 741, 798, 858, 920, 984, 1052, 1123, 1196, 1269, 1344, 1423, 1503, 1585, 1673, 1761, 1852, 1946, 2039, 2136, 2236, 2336, 2441
Offset: 1