A184236 Number of strings of numbers x(i=1..n) in 0..5 with sum i^2*x(i)^2 equal to n^2*25

1, 1, 1, 2, 15, 24, 213, 356, 2531, 9710, 46519, 244683, 891784, 4720805, 16462599, 78516038, 276022161, 1161269082, 4197268616, 15926278724, 58682897472, 207708273846, 766346150693, 2617679503224, 9515642240343, 32088717865889

Offset

1,4

Comments

Column 5 of A184240

Links

R. H. Hardin, Table of n, a(n) for n = 1..33

Example

Some solutions for n=7
..2....4....0....0....0....2....2....1....1....0....4....2....4....4....4....1
..1....1....0....2....4....2....3....3....1....1....1....5....5....5....2....2
..2....4....4....3....4....3....4....4....0....0....0....4....5....5....1....0
..2....1....2....4....2....1....1....1....5....4....4....5....0....3....5....0
..2....3....0....2....1....0....4....2....0....5....0....2....2....4....0....2
..4....1....4....4....2....3....4....2....1....2....5....1....0....2....0....3
..3....4....3....2....4....4....1....4....4....2....1....3....4....2....4....4

Crossrefs

Sequence in context: A153712 A153711 A116049 * A023651 A116028 A175828

Adjacent sequences: A184233 A184234 A184235 * A184237 A184238 A184239

Keyword

nonn

Author

R. H. Hardin Jan 10 2011

Status

approved