A184846 Number of strings of numbers x(i=1..n) in 0..7 with sum i*x(i)^4 equal to n*2401

1, 1, 2, 2, 3, 19, 76, 476, 3627, 30780, 191122, 1143877, 7374982, 46220204, 305794362, 1874323984, 11217509631, 68193471721

Offset

1,3

Comments

Column 7 of A184848

Links

Table of n, a(n) for n=1..18.

Example

All solutions for n=5
..0....7....0
..7....0....0
..7....0....0
..0....7....0
..0....0....7

Crossrefs

Sequence in context: A230504 A265806 A049132 * A323609 A087768 A113604

Adjacent sequences: A184843 A184844 A184845 * A184847 A184848 A184849

Keyword

nonn

Author

R. H. Hardin Jan 23 2011

Status

approved