A184695 Number of strings of numbers x(i=1..n) in 0..n with sum i*x(i) equal to n^2.

1, 2, 6, 28, 156, 985, 6575, 46037, 332729, 2467215, 18668476, 143639875, 1120736308, 8848906376, 70585065382, 568063412434, 4607556545105, 37630962749979, 309239715248494, 2555320702164649, 21220771891605441

Offset: 1

Author

R. H. Hardin Jan 20 2011

Keywords

• nonn

Comments

Diagonal of A184703

Examples

			Some solutions for n=4
..1....4....0....2....2....0....3....2....1....2....3....0....4....4....2....0
..2....0....2....0....1....2....0....3....4....1....3....3....0....3....2....0
..1....0....0....2....0....4....3....0....1....4....1....2....4....2....2....0
..2....3....3....2....3....0....1....2....1....0....1....1....0....0....1....4
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..35