A184435 Number of strings of numbers x(i=1..n) in 0..3 with sum i*x(i)^2 equal to n*9

1, 1, 2, 5, 19, 51, 130, 359, 946, 2333, 5818, 14088, 33135, 76611, 173464, 384457, 837012, 1790715, 3766901, 7802712, 15923697, 32039816, 63611885, 124689752, 241431996, 462031599, 874300348, 1636607223, 3031814449, 5560277156

Offset

1,3

Comments

Column 3 of A184441

Links

R. H. Hardin, Table of n, a(n) for n = 1..149

Example

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

Crossrefs

Sequence in context: A077323 A215274 A304782 * A112266 A287019 A215169

Adjacent sequences: A184432 A184433 A184434 * A184436 A184437 A184438

Keyword

nonn

Author

R. H. Hardin Jan 14 2011

Status

approved