{1},
{1, 1},
{1, 6, 1},
{1, 9, 9, 1},
{1, 12, 42, 12, 1},
{1, 15, 70, 70, 15, 1},
{1, 18, 105, 300, 105, 18, 1},
{1, 21, 147, 525, 525, 147, 21, 1},
{1, 24, 196, 840, 2170, 840, 196, 24, 1},
{1, 27, 252, 1260, 3906, 3906, 1260, 252, 27, 1},
{1, 30, 315, 1800, 6510, 15876, 6510, 1800, 315, 30, 1}