A133414 Half the number of ways of placing up to n^3 identical weights in an n X n X n grid so that it balances at its center, at most one weight to a grid position.

1, 9, 403840, 3134895604437030, 2672411782638277673724960927991328

Offset

1,2

Links

Table of n, a(n) for n=1..5.

Crossrefs

Sequence in context: A120352 A225069 A058468 * A013850 A174001 A273234

Adjacent sequences: A133411 A133412 A133413 * A133415 A133416 A133417

Keyword

nonn,more

Author

R. H. Hardin, Nov 25 2007

Status

approved