References to A176615

Number of edges in the graph on n vertices, labeled 1 to n, where two vertices are joined just if their labels sum to a perfect square.
0, 0, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36

1 seqfan posts