A184446 Number of strings of numbers x(i=1..7) in 0..n with sum i*x(i)^2 equal to n*49

5, 31, 130, 368, 915, 1993, 3818, 6805, 11052, 18352, 28860, 39870, 61568, 88347, 109115, 159804, 215574, 266628, 362832, 445236, 541934, 738893, 903565, 1011760, 1295590, 1650305, 1800585, 2280782, 2748502, 2923138, 3779009, 4358050, 4724361

Offset

1,1

Comments

Row 7 of A184441

Links

R. H. Hardin, Table of n, a(n) for n = 1..58

Example

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

Crossrefs

Sequence in context: A260045 A267938 A041303 * A077719 A235462 A005826

Adjacent sequences: A184443 A184444 A184445 * A184447 A184448 A184449

Keyword

nonn

Author

R. H. Hardin Jan 14 2011

Status

approved