cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A208822 Number of n-bead necklaces labeled with numbers -5..5 allowing reversal, with sum zero.

Original entry on oeis.org

1, 6, 18, 131, 905, 7582, 65134, 587682, 5416897, 50959134, 486441796, 4701644087, 45911470685
Offset: 1

Views

Author

R. H. Hardin, Mar 01 2012

Keywords

Comments

Column 5 of A208825.

Examples

			Some solutions for n=3:
.-2...-2...-2...-3...-5...-3...-2...-5...-4...-4....0...-4...-3...-1...-4...-5
..0...-2...-1....0....2...-1....1....1...-1....0....0....2...-2...-1....1....0
..2....4....3....3....3....4....1....4....5....4....0....2....5....2....3....5

Crossrefs

Cf. A208825.

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