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 1-3 of 3 results.

A221922 Number of nX2 arrays of occupancy after each element stays put or moves to some king-move neighbor, without move-in move-out straight through or left turns.

Original entry on oeis.org

3, 35, 350, 3487, 34714, 345744, 3443699, 34300167, 341638088, 3402798388, 33892698751, 337579518956, 3362374079673, 33490063280467, 333569172221123, 3322430051077535, 33092211042163927, 329606467201422876
Offset: 1

Views

Author

R. H. Hardin Jan 31 2013

Keywords

Comments

Column 2 of A221925

Examples

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

Links

Formula

Empirical: a(n) = 9*a(n-1) +12*a(n-2) -29*a(n-3) +41*a(n-4) +75*a(n-5) -129*a(n-6) -30*a(n-7) +61*a(n-8) -a(n-9) -4*a(n-10)

A221923 Number of nX3 arrays of occupancy after each element stays put or moves to some king-move neighbor, without move-in move-out straight through or left turns.

Original entry on oeis.org

6, 350, 13228, 508281, 19513309, 749481703, 28788205897, 1105748138634, 42471447510183, 1631315682219574
Offset: 1

Views

Author

R. H. Hardin Jan 31 2013

Keywords

Comments

Column 3 of A221925

Examples

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

A221924 Number of nX4 arrays of occupancy after each element stays put or moves to some king-move neighbor, without move-in move-out straight through or left turns.

Original entry on oeis.org

13, 3487, 508281, 75313013, 11143187999, 1648683705320, 243924224883451, 36085841660921104, 5338383610734905950, 789733272292081157838
Offset: 1

Views

Author

R. H. Hardin Jan 31 2013

Keywords

Comments

Column 4 of A221925

Examples

			Some solutions for n=3
..0..0..0..1....0..2..1..3....0..4..0..3....0..1..2..0....0..3..0..1
..0..5..0..0....0..0..0..1....0..1..0..0....0..2..0..1....0..2..1..1
..1..3..0..2....2..1..1..1....0..3..1..0....1..0..3..2....3..0..1..0
Showing 1-3 of 3 results.

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