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 1-7 of 7 results.

A250569 Number of (n+2) X (3+2) 0..1 arrays with nondecreasing maximum of every three consecutive values in every row and column.

Original entry on oeis.org

21952, 463006, 9583440, 194160522, 3844025984, 75733658665, 1486288137310, 29093999130722, 568992945964954, 11121085195129708, 217289681422138350, 4244862050968522642, 82917728735945546896, 1619605399294091536443
Offset: 1

Views

Author

R. H. Hardin, Nov 25 2014

Keywords

Comments

Column 3 of A250574.

Examples

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

Crossrefs

Cf. A250574.

A250568 Number of (n+2)X(2+2) 0..1 arrays with nondecreasing maximum of every three consecutive values in every row and column.

Original entry on oeis.org

3375, 39852, 463006, 5281190, 59025322, 656805747, 7283102949, 80572967431, 890627215921, 9839229259206, 108665126977996, 1199931916374100, 13249074252546292, 146283120433185333, 1615074451183837275
Offset: 1

Views

Author

R. H. Hardin, Nov 25 2014

Keywords

Comments

Column 2 of A250574

Examples

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

Formula

Empirical: a(n) = 14*a(n-1) -10*a(n-2) -30*a(n-3) -3170*a(n-4) +4216*a(n-5) +25146*a(n-6) +250042*a(n-7) -341325*a(n-8) -1568242*a(n-9) -8687308*a(n-10) +9449792*a(n-11) +35649848*a(n-12) +155138752*a(n-13) -115721952*a(n-14) -382633312*a(n-15) -1555690146*a(n-16) +675955548*a(n-17) +2149108188*a(n-18) +9193269172*a(n-19) -1764843612*a(n-20) -6156832816*a(n-21) -32786507324*a(n-22) +802730756*a(n-23) +7136229438*a(n-24) +71641688940*a(n-25) +4949326424*a(n-26) +2825573648*a(n-27) -98127631080*a(n-28) -10872718912*a(n-29) -16123327568*a(n-30) +85681472432*a(n-31) +10646497059*a(n-32) +17459854358*a(n-33) -48074175586*a(n-34) -5906103334*a(n-35) -9299023250*a(n-36) +17317546552*a(n-37) +1919830834*a(n-38) +2745659890*a(n-39) -3906740593*a(n-40) -357055738*a(n-41) -455410940*a(n-42) +517200448*a(n-43) +32835072*a(n-44) +37028096*a(n-45) -36292608*a(n-46) -1146880*a(n-47) -917504*a(n-48) +1048576*a(n-49)

A250570 Number of (n+2) X (4+2) 0..1 arrays with nondecreasing maximum of every three consecutive values in every row and column.

Original entry on oeis.org

140608, 5281190, 194160522, 6967413024, 243722971680, 8480014708481, 293803461491618, 10151010566609616, 350378450458040008, 12086042361798408692, 416746941251487073192, 14367773038198024039358
Offset: 1

Views

Author

R. H. Hardin, Nov 25 2014

Keywords

Comments

Column 4 of A250574.

Examples

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

Crossrefs

Cf. A250574.

A250571 Number of (n+2)X(5+2) 0..1 arrays with nondecreasing maximum of every three consecutive values in every row and column.

Original entry on oeis.org

884736, 59025322, 3844025984, 243722971680, 15037777879872, 922491768788283, 56336934011827612, 3430565103477146672, 208686531330272634912, 12686210535067758443318, 770915008354914888662172
Offset: 1

Views

Author

R. H. Hardin, Nov 25 2014

Keywords

Comments

Column 5 of A250574

Examples

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

A250572 Number of (n+2)X(6+2) 0..1 arrays with nondecreasing maximum of every three consecutive values in every row and column.

Original entry on oeis.org

5545233, 656805747, 75733658665, 8480014708481, 922491768788283, 99734163008521518, 10731808712788740428, 1151312365125916733776, 123382030549471094082496, 13213262025534722253389898
Offset: 1

Views

Author

R. H. Hardin, Nov 25 2014

Keywords

Comments

Column 6 of A250574

Examples

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

A250567 Number of (n+2)X(n+2) 0..1 arrays with nondecreasing maximum of every three consecutive values in every row and column.

Original entry on oeis.org

512, 39852, 9583440, 6967413024, 15037777879872, 99734163008521518, 2034240174378849957658, 127927996167974091553962336
Offset: 1

Views

Author

R. H. Hardin, Nov 25 2014

Keywords

Comments

Diagonal of A250574

Examples

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

A250573 Number of (n+2)X(7+2) 0..1 arrays with nondecreasing maximum of every three consecutive values in every row and column.

Original entry on oeis.org

34645976, 7283102949, 1486288137310, 293803461491618, 56336934011827612, 10731808712788740428, 2034240174378849957658, 384394372014015482053442, 72556092801484403662582150
Offset: 1

Views

Author

R. H. Hardin, Nov 25 2014

Keywords

Comments

Column 7 of A250574

Examples

			Some solutions for n=1
..0..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0..0
..0..0..0..1..1..0..0..1..0....0..1..1..1..1..0..1..0..1
..0..0..1..0..1..1..0..1..0....0..0..1..0..0..1..0..0..1
		
Showing 1-7 of 7 results.