A184842 Number of strings of numbers x(i=1..n) in 0..3 with sum i*x(i)^4 equal to n*81

1, 1, 2, 2, 6, 10, 17, 45, 153, 561, 1670, 4780, 14974, 45555, 140211, 419924, 1245122, 3669858, 10724147, 31185503, 89840674, 256746801, 728672328, 2051488536, 5732076608, 15895090361, 43752447121, 119570863227, 324496444134

Offset

1,3

Comments

Column 3 of A184848

Links

R. H. Hardin, Table of n, a(n) for n = 1..73

Example

All solutions for n=5
..3....0....0....2....1....1
..0....3....0....1....2....0
..0....3....0....3....2....0
..3....0....0....2....3....3
..0....0....3....2....0....2

Crossrefs

Sequence in context: A362934 A127404 A292037 * A181409 A248800 A165941

Adjacent sequences: A184839 A184840 A184841 * A184843 A184844 A184845

Keyword

nonn

Author

R. H. Hardin Jan 23 2011

Status

approved