A049527 Number of possible sets {{row sums},{column sums}} of an n X n+1 matrix with entries from {0,1,-1} and all row and column sums distinct.

1, 2, 3, 6, 10, 22, 39, 94, 174, 464, 886, 2610

Offset

1,2

Links

Table of n, a(n) for n=1..12.

Crossrefs

Cf. A049475, A049526.

Sequence in context: A014270 A127076 A137208 * A074371 A032202 A125702

Adjacent sequences: A049524 A049525 A049526 * A049528 A049529 A049530

Keyword

nonn,hard,nice

Author

Michael Kleber

Status

approved