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.

A202925 Number of nX2 0..2 arrays with adjacent row and column sums unequal.

Original entry on oeis.org

6, 52, 352, 2444, 17508, 124340, 872940, 6112832, 42822036, 299718840, 2094967284, 14630909636, 102130256404, 712606093984, 4970091031972, 34652009741528, 241529705097892, 1683093292484152, 11726099598816180, 81680440933444532
Offset: 1

Views

Author

R. H. Hardin Dec 26 2011

Keywords

Comments

Column 2 of A202931

Examples

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

A202926 Number of nX3 0..2 arrays with adjacent row and column sums unequal.

Original entry on oeis.org

12, 352, 8460, 194636, 4439916, 100236532, 2247406834, 50175952564, 1116665770790, 24792319092616, 549446441126732, 12159393350480352, 268781263257739898, 5935782137606108232, 130983931680297881360
Offset: 1

Views

Author

R. H. Hardin Dec 26 2011

Keywords

Comments

Column 3 of A202931

Examples

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

A202927 Number of nX4 0..2 arrays with adjacent row and column sums unequal.

Original entry on oeis.org

24, 2444, 194636, 14394092, 1032147416, 72961197604, 5108912536716, 355319989467096, 24594054479225084, 1696354402524087764, 116689792549722046964, 8009869338667569120504, 548878921109534525040696
Offset: 1

Views

Author

R. H. Hardin Dec 26 2011

Keywords

Comments

Column 4 of A202931

Examples

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

A202928 Number of n X 5 0..2 arrays with adjacent row and column sums unequal.

Original entry on oeis.org

48, 17508, 4439916, 1032147416, 231197740500, 50721408178292, 10983388813793312, 2357485779036582768
Offset: 1

Views

Author

R. H. Hardin, Dec 26 2011

Keywords

Comments

Column 5 of A202931.

Examples

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

Crossrefs

Cf. A202931.

A202929 Number of nX6 0..2 arrays with adjacent row and column sums unequal.

Original entry on oeis.org

96, 124340, 100236532, 72961197604, 50721408178292
Offset: 1

Views

Author

R. H. Hardin Dec 26 2011

Keywords

Comments

Column 6 of A202931

Examples

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

A202930 Number of nX7 0..2 arrays with adjacent row and column sums unequal.

Original entry on oeis.org

192, 872940, 2247406834, 5108912536716, 10983388813793312
Offset: 1

Views

Author

R. H. Hardin Dec 26 2011

Keywords

Comments

Column 7 of A202931

Examples

			Some solutions for n=2
..0..1..0..2..1..1..2....0..1..2..0..2..2..1....0..2..0..1..2..0..0
..0..1..0..0..0..1..2....0..1..1..2..1..0..2....0..2..2..2..2..1..0
		
Showing 1-6 of 6 results.