A023562 Convolution of A023531 and odd numbers.
0, 1, 3, 5, 8, 12, 16, 20, 25, 31, 37, 43, 49, 56, 64, 72, 80, 88, 96, 105, 115, 125, 135, 145, 155, 165, 176, 188, 200, 212, 224, 236, 248, 260, 273, 287, 301, 315, 329, 343, 357, 371, 385, 400, 416, 432, 448, 464, 480, 496, 512, 528, 544, 561
Offset: 1