A068277 1/10 the number of colorings of an n X n rhombic hexagonal array with 10 colors.

1, 576, 16777728, 24714188421120, 1841036262836198694912, 6935553325507306088696846155776, 1321303757030716925589852391986906706673664, 12729959052897370321435414735439044407648771577838567424

Offset

1,2

Comments

Terms for rhombic- and staggered- hexagonal arrays are the same for n in 1..4.

Links

Table of n, a(n) for n=1..8.

Crossrefs

Cf. A068239-A068305, A000332, A002417, A027441, A212162, A212163.

Sequence in context: A299414 A300054 A013775 * A068289 A159055 A064031

Adjacent sequences: A068274 A068275 A068276 * A068278 A068279 A068280

Keyword

nonn

Author

R. H. Hardin, Feb 24 2002

Extensions

a(6)-a(8) from Alois P. Heinz, May 02 2012

Status

approved