A253107 - cp's OEIS frontend

A253107 Number of Eulerian cycles in a lattice graph bounded by the eight equations x+y=-2n, x+y=2n, x-y=-2n, x-y=2n, x=1-2n, x=2n-1, y=1-2n, and y=2n-1 (Aztec Diamond graph).

n	a(n)
1	1
2	40
3	132160
4	33565612800
5	641149227424067584
6	911979417737022109612195840
7	96089134887576552087085389330051891200
8	747578503218020593242369202628724536730457230016512

[1, 40, 132160, 33565612800, 641149227424067584, 911979417737022109612195840, 96089134887576552087085389330051891200, 747578503218020593242369202628724536730457230016512]

cp's OEIS Frontend

A253107 Number of Eulerian cycles in a lattice graph bounded by the eight equations x+y=-2n, x+y=2n, x-y=-2n, x-y=2n, x=1-2n, x=2n-1, y=1-2n, and y=2n-1 (Aztec Diamond graph).

Table of values

List of values