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.

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A241254 Number of nX7 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.

Original entry on oeis.org

24, 41, 356, 3822, 50281, 752717, 13138271, 265444281, 6509404451
Offset: 1

Views

Author

R. H. Hardin, Apr 18 2014

Keywords

Comments

Column 7 of A241255

Examples

			Some solutions for n=3
..3..3..2..2..2..3..2....2..2..3..3..2..3..3....3..3..2..2..2..2..2
..2..1..3..0..1..1..3....0..0..2..1..1..2..1....2..1..3..0..0..1..1
..2..2..3..1..2..1..2....0..0..0..2..2..2..2....2..2..3..1..0..0..2
		

A241260 Number of 6Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.

Original entry on oeis.org

14, 212, 606, 2570, 25190, 124372, 752717, 6264519, 34987493, 251554523, 1844399721, 11715976551
Offset: 1

Views

Author

R. H. Hardin, Apr 18 2014

Keywords

Comments

Row 6 of A241255

Examples

			Some solutions for n=3
..3..3..2....3..3..2....3..3..2....3..3..2....3..3..2....3..3..2....3..3..2
..2..1..3....2..1..3....2..1..3....2..1..3....2..1..3....2..1..3....2..1..1
..2..2..3....2..2..2....2..1..3....2..1..2....2..2..3....2..2..2....2..2..2
..2..1..3....2..1..2....2..2..3....2..0..1....2..1..2....2..1..2....2..0..2
..2..0..1....2..1..3....0..2..2....0..2..1....2..1..3....0..0..3....3..1..2
..0..2..2....2..2..3....0..3..3....0..2..2....0..2..2....0..2..2....2..1..3
		

A241261 Number of 7 X n 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.

Original entry on oeis.org

20, 488, 2111, 13328, 225191, 1558957, 13138271, 205823368, 1596727720, 16865140873
Offset: 1

Views

Author

R. H. Hardin, Apr 18 2014

Keywords

Comments

Row 7 of A241255.

Examples

			Some solutions for n=3
..3..3..2....3..3..2....2..2..3....3..3..2....3..3..2....3..3..2....3..3..2
..2..1..1....2..1..1....0..0..2....2..1..1....2..1..3....2..1..3....2..1..3
..2..2..2....2..2..2....0..0..2....0..2..2....2..1..3....2..2..3....2..1..3
..2..1..3....0..0..2....3..3..2....0..3..3....2..2..3....0..0..3....2..0..1
..2..1..1....0..0..2....0..3..3....2..2..3....2..2..2....2..0..2....0..0..2
..2..2..2....0..3..3....0..2..1....2..1..1....2..0..2....0..0..2....0..3..1
..2..0..2....2..2..3....3..3..2....3..2..1....0..0..2....0..0..2....3..2..3
		

Crossrefs

Cf. A241255.
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