A023555 Self-convolution of A023531.
0, 0, 1, 0, 0, 2, 0, 0, 1, 2, 0, 0, 2, 0, 2, 0, 1, 2, 0, 0, 2, 2, 0, 2, 0, 0, 1, 4, 0, 0, 2, 0, 2, 0, 2, 2, 0, 0, 3, 2, 0, 0, 2, 0, 2, 2, 0, 4, 0, 0, 0, 2, 1, 2, 2, 0, 2, 2, 0, 0, 2, 2, 2, 0, 0, 2, 2, 0, 3, 2, 0, 0, 4, 0, 0, 0, 0, 6, 0, 2, 2, 0, 0, 2, 2, 0, 1, 2, 0, 2
Offset: 1