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.

Showing 1-4 of 4 results.

A221505 Number of nX3 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without consecutive moves in the same direction.

Original entry on oeis.org

0, 44, 664, 12495, 221614, 4010052, 72195950, 1301644004, 23457033692, 422775316892, 7619575554956, 137327198061432, 2475032964645724, 44607285582888084, 803952693936738644, 14489560929396894421
Offset: 1

Views

Author

R. H. Hardin Jan 18 2013

Keywords

Comments

Column 3 of A221507

Examples

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

A221508 Number of 2Xn arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without consecutive moves in the same direction.

Original entry on oeis.org

0, 9, 44, 446, 3334, 27540, 219070, 1766136, 14168766, 113870162, 914550470, 7346946970, 59015933032, 474072774244, 3808166264624, 30590638905810, 245731343642532, 1973934759524284, 15856413036814582, 127372929035331130
Offset: 1

Views

Author

R. H. Hardin Jan 18 2013

Keywords

Comments

Row 2 of A221507

Examples

			Some solutions for n=3
..0..3..0....0..4..0....1..2..0....0..2..2....1..0..0....0..2..0....0..1..0
..1..1..1....1..0..1....1..2..0....0..2..0....0..4..1....1..2..1....0..3..2
		

A221506 Number of nX4 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without consecutive moves in the same direction.

Original entry on oeis.org

1, 446, 31663, 2691211, 219689604, 18054912942, 1481559445366, 121595969760961, 9979148121938539, 818972532183106546, 67211557641378928789, 5515926988608836197348
Offset: 1

Views

Author

R. H. Hardin Jan 18 2013

Keywords

Comments

Column 4 of A221507

Examples

			Some solutions for n=3
..1..0..1..0....0..2..2..1....0..0..1..1....1..2..0..1....0..1..0..1
..0..3..1..3....2..2..0..1....2..4..1..1....1..0..3..1....2..1..3..2
..2..0..1..0....1..0..1..0....1..0..1..0....1..2..0..0....1..1..0..0
		

A221509 Number of 3Xn arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without consecutive moves in the same direction.

Original entry on oeis.org

0, 64, 664, 31663, 730874, 22664752, 617892584, 17782943460, 499912745268, 14194927933912, 401323009766448, 11367289765226164, 321716709992052606, 9108319376609834007, 257833317722010551358, 7299063007433073641077
Offset: 1

Views

Author

R. H. Hardin Jan 18 2013

Keywords

Comments

Row 3 of A221507

Examples

			Some solutions for n=3
..0..3..1....1..4..0....1..1..1....0..0..0....0..3..0....0..3..0....1..1..0
..0..3..2....0..1..2....0..1..1....1..2..2....0..0..2....2..3..1....2..4..0
..0..0..0....0..1..0....0..4..0....0..4..0....1..3..0....0..0..0....0..1..0
		
Showing 1-4 of 4 results.