A054759 - cp's OEIS frontend

A054759 Number of Eulerian orientations of the n X n square lattice (with wrap-around), i.e., number of arrow configurations on n X n grid that satisfy the square ice rule.

n	a(n)
1	4
2	18
3	148
4	2970
5	143224
6	16448400
7	4484823396
8	2901094068042
9	4448410550095612
10	16178049740086515288
11	139402641051212392498528
12	2849295959501939989625992464
13	137950545200232788276834783781648
14	15844635835975276495290739119895808472

[4, 18, 148, 2970, 143224, 16448400, 4484823396, 2901094068042, 4448410550095612, 16178049740086515288, 139402641051212392498528, 2849295959501939989625992464, 137950545200232788276834783781648, 15844635835975276495290739119895808472]

cp's OEIS Frontend

A054759 Number of Eulerian orientations of the n X n square lattice (with wrap-around), i.e., number of arrow configurations on n X n grid that satisfy the square ice rule.

Table of values

List of values