A271850 Number of ways to move elements of an nXnXn triangular array to themselves or a neighbor, with no 2-cycles and with no more than 6-1 elements moved to themselves.

1, 3, 22, 408, 18860, 1996822, 484756640, 264090710890, 318643448832078, 849130639354784618

Offset

1,2

Comments

Column 6 of A271852.

Links

Table of n, a(n) for n=1..10.

Example

Some solutions for n=4
.....0........5........6........5........0........6........0........6
....0.0......6.1......2.6......6.1......0.5......2.3......5.3......2.5
...4.4.5....5.6.1....0.1.3....6.4.1....5.3.1....0.4.6....4.6.1....2.5.0
..2.3.3.0..4.1.4.1..0.0.0.0..2.3.0.0..4.4.2.0..0.0.1.3..0.0.4.1..2.3.0.0
Element moves: 0=itself 1=nw 2=ne 3=w 4=e 5=sw 6=se, reciprocals total 7

Crossrefs

Cf. A271852.

Sequence in context: A275366 A196734 A271849 * A364844 A156512 A119770

Adjacent sequences: A271847 A271848 A271849 * A271851 A271852 A271853

Keyword

nonn

Author

R. H. Hardin, Apr 15 2016

Status

approved