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A183948 Number of strings of numbers x(i=1..n) in 0..4 with sum i^2*x(i) equal to n^2*4 1
1, 2, 3, 8, 27, 78, 219, 649, 1805, 4987, 13179, 34331, 87203, 217281, 532073, 1278041, 3025466, 7046194, 16192534, 36706373, 82197783, 181900279, 398099637, 862217855, 1848842707, 3927404946, 8267742253, 17257223344, 35726693834 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 4 of A183953

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..60

EXAMPLE

Some solutions for n=6

..0....4....2....3....4....0....3....2....2....0....4....0....2....3....4....2

..2....1....2....3....4....3....0....1....4....2....1....3....1....4....1....1

..2....2....1....2....3....0....1....0....2....1....1....1....1....0....4....4

..2....2....4....0....0....2....2....1....0....1....1....3....2....4....4....1

..2....2....1....3....1....4....4....2....0....3....3....3....1....1....0....2

..1....1....1....1....2....0....0....2....3....1....1....0....2....1....1....1

CROSSREFS

Sequence in context: A246446 A296093 A041399 * A041503 A086613 A121401

Adjacent sequences:  A183945 A183946 A183947 * A183949 A183950 A183951

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 08 2011

STATUS

approved

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Last modified October 25 19:28 EDT 2020. Contains 338012 sequences. (Running on oeis4.)