A183950 Number of strings of numbers x(i=1..n) in 0..6 with sum i^2*x(i) equal to n^2*6.

1, 2, 6, 21, 94, 398, 1613, 6301, 23611, 85595, 299789, 1018889, 3364983, 10823939, 33973701, 104224215, 313017236, 921527638, 2662917595, 7561290034, 21119173722, 58077373552, 157382658382, 420599245799, 1109306162737

Offset: 1

Author

R. H. Hardin Jan 08 2011

Keywords

• nonn

Comments

Column 6 of A183953

Examples

			Some solutions for n=4
..3....0....2....6....5....6....6....0....0....1....2....4....1....3....4....5
..1....3....3....1....0....6....5....4....0....5....6....2....1....4....6....4
..1....4....2....6....3....2....6....0....0....3....6....4....3....5....4....3
..5....3....4....2....4....3....1....5....6....3....1....3....4....2....2....3
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..45