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.

A200148 Number of 0..2 arrays x(0..n-1) of n elements with zero n-1st difference.

Original entry on oeis.org

1, 3, 5, 9, 15, 39, 45, 129, 149, 243, 369, 1365, 2061, 5901, 5951, 7785, 10519, 42519, 59473, 213561, 157559, 278835, 503513, 1553481, 1051639, 2491707, 2981747, 6622209, 10056593, 34139241
Offset: 1

Views

Author

R. H. Hardin Nov 13 2011

Keywords

Comments

Column 2 of A200154

Examples

			Some solutions for n=6
..0....0....1....1....2....2....2....1....2....2....2....0....2....0....1....1
..2....1....0....2....2....0....2....2....1....0....0....0....0....0....0....0
..1....2....0....0....1....1....2....1....0....0....0....0....2....0....0....1
..1....2....0....0....0....1....2....0....0....0....1....0....2....1....1....1
..2....1....0....2....0....0....2....0....1....0....2....0....0....2....2....0
..0....0....1....1....2....2....2....1....2....2....2....0....2....0....1....1

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