A222822 Number of idempotent 3X3 0..n matrices.

50, 122, 218, 344, 488, 668, 860, 1088, 1334, 1610, 1898, 2234, 2570, 2942, 3338, 3764, 4196, 4676, 5156, 5684, 6224, 6788, 7364, 8000, 8630, 9290, 9974, 10694, 11414, 12194, 12962, 13778, 14606, 15458, 16334, 17264, 18176, 19124, 20096, 21116, 22124

Offset: 1

Author

R. H. Hardin Apr 09 2013

Keywords

• nonn

Comments

Row 3 of A222821

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..81