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 1-6 of 6 results.

A196332 Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,3,1,2 for x=0,1,2,3,4.

Original entry on oeis.org

4, 8, 7, 50, 111, 259, 744, 1840, 4761, 12491, 33073, 86147, 225519, 592444, 1548876, 4064416, 10672675, 27999791, 73482986, 192857345, 506140823, 1328448433, 3487163834, 9153779129, 24028409740, 63075279907, 165574433166, 434640853456
Offset: 1

Views

Author

R. H. Hardin Oct 01 2011

Keywords

Comments

Every 0 is next to 0 4's, every 1 is next to 1 0's, every 2 is next to 2 3's, every 3 is next to 3 1's, every 4 is next to 4 2's
Column 3 of A196337

Examples

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

Formula

Empirical: a(n) = 3*a(n-1) -a(n-3) -5*a(n-4) +6*a(n-5) +6*a(n-6) -22*a(n-7) -71*a(n-8) +6*a(n-9) +95*a(n-10) +3*a(n-11) +139*a(n-12) -20*a(n-13) -45*a(n-14) +44*a(n-15) -6*a(n-16) -14*a(n-17)

A196333 Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,3,1,2 for x=0,1,2,3,4.

Original entry on oeis.org

5, 17, 50, 335, 894, 3246, 14973, 64423, 270901, 1067992, 4278465, 17554846, 73250696, 303360883, 1240601669, 5071382869, 20820082942, 85773230271, 353226448334, 1451624154342, 5960878160915, 24492093845487, 100710579314169
Offset: 1

Views

Author

R. H. Hardin Oct 01 2011

Keywords

Comments

Every 0 is next to 0 4's, every 1 is next to 1 0's, every 2 is next to 2 3's, every 3 is next to 3 1's, every 4 is next to 4 2's
Column 4 of A196337

Examples

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

Formula

Empirical: a(n) = 5*a(n-1) -4*a(n-2) +26*a(n-4) +56*a(n-5) -358*a(n-6) -748*a(n-7) -896*a(n-8) +909*a(n-9) +187*a(n-10) -12078*a(n-11) +42445*a(n-12) +97050*a(n-13) +246286*a(n-14) +522734*a(n-15) +662122*a(n-16) -574583*a(n-17) -2576076*a(n-18) -7793975*a(n-19) -18081736*a(n-20) -11777431*a(n-21) -37101001*a(n-22) -40924777*a(n-23) +19988497*a(n-24) +20268565*a(n-25) +59783847*a(n-26) +29293979*a(n-27) +59333365*a(n-28) -2116548*a(n-29) -34111094*a(n-30) -18558798*a(n-31) -28606287*a(n-32) -8559806*a(n-33) -18722495*a(n-34) +1768049*a(n-35) +8214636*a(n-36) +12355852*a(n-37) +15376*a(n-38) +6620070*a(n-39) +393935*a(n-40) +4096014*a(n-41) -2372022*a(n-42) +503938*a(n-43) -494622*a(n-44) -65073*a(n-45) -85243*a(n-46) -185276*a(n-47) +85167*a(n-48) -25581*a(n-49) +7530*a(n-50) +4334*a(n-51) -193*a(n-52) +967*a(n-53) -255*a(n-54)

A196334 Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,3,1,2 for x=0,1,2,3,4.

Original entry on oeis.org

8, 34, 111, 894, 3793, 25295, 169152, 868710, 4661189, 28620947, 176947794, 1020483285, 5753457776, 33726487544, 201541895718, 1182711274308, 6838120164129, 39848553924565, 234753917513044, 1378789238484503
Offset: 1

Views

Author

R. H. Hardin Oct 01 2011

Keywords

Comments

Every 0 is next to 0 4's, every 1 is next to 1 0's, every 2 is next to 2 3's, every 3 is next to 3 1's, every 4 is next to 4 2's
Column 5 of A196337

Examples

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

A196335 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,3,1,2 for x=0,1,2,3,4.

Original entry on oeis.org

12, 62, 259, 3246, 25295, 237905, 1783508, 14742650, 131257701, 1161104389, 9477920113, 79981857183, 698216221745, 5973531188672, 50458097968498, 431717763820004, 3722514631710593, 31795825068196111, 270678277789108068
Offset: 1

Views

Author

R. H. Hardin Oct 01 2011

Keywords

Comments

Every 0 is next to 0 4's, every 1 is next to 1 0's, every 2 is next to 2 3's, every 3 is next to 3 1's, every 4 is next to 4 2's
Column 6 of A196337

Examples

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

A196336 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,3,1,2 for x=0,1,2,3,4.

Original entry on oeis.org

17, 123, 744, 14973, 169152, 1783508, 20775275, 288083607, 3804352736, 45025949276, 551749790508, 6938656473356, 86871212883112, 1084929546742079, 13732256293307465, 172093176937103403, 2135921380879622460
Offset: 1

Views

Author

R. H. Hardin Oct 01 2011

Keywords

Comments

Every 0 is next to 0 4's, every 1 is next to 1 0's, every 2 is next to 2 3's, every 3 is next to 3 1's, every 4 is next to 4 2's
Column 7 of A196337

Examples

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

A196331 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,0,3,1,2 for x=0,1,2,3,4.

Original entry on oeis.org

1, 5, 7, 335, 3793, 237905, 20775275, 5845172493, 2321484416437
Offset: 1

Views

Author

R. H. Hardin Oct 01 2011

Keywords

Comments

Every 0 is next to 0 4's, every 1 is next to 1 0's, every 2 is next to 2 3's, every 3 is next to 3 1's, every 4 is next to 4 2's
Diagonal of A196337

Examples

			Some solutions for n=4
..0..1..1..0....1..1..0..1....1..0..0..1....0..0..0..0....0..1..1..0
..0..3..1..0....0..3..1..3....1..0..0..1....1..1..3..1....0..1..3..0
..0..1..1..0....0..1..1..1....1..1..1..1....1..1..1..3....0..1..1..0
..1..3..1..0....1..1..0..0....0..1..1..0....0..0..0..1....1..3..1..0
		
Showing 1-6 of 6 results.