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 1-5 of 5 results.

A278430 Number of nX2 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.

Original entry on oeis.org

6, 100, 1609, 19624, 178352, 1287838, 7795151, 41058743, 193149285, 826734193, 3264405727, 12016477160, 41579224479, 136142690453, 424140541353, 1263030700894, 3609095743983, 9929303441355, 26377932553959, 67838309686132
Offset: 1

Views

Author

R. H. Hardin, Nov 22 2016

Keywords

Comments

Column 2 of A278435.

Examples

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

Crossrefs

Cf. A278435.

Formula

Empirical polynomial of degree 31 (see link above)

A278431 Number of nX3 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.

Original entry on oeis.org

40, 1609, 57760, 2116789, 67971132, 1796061464, 39513263094, 743248079740, 12242795030458, 179948822861856, 2394561544941994, 29174653111810701, 328380943500399272, 3439574456695348801, 33729578625174035514
Offset: 1

Views

Author

R. H. Hardin, Nov 22 2016

Keywords

Comments

Column 3 of A278435.

Examples

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

Crossrefs

Cf. A278435.

Formula

Empirical polynomial of degree 127 (see link above)

A278432 Number of nX4 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.

Original entry on oeis.org

155, 19624, 2116789, 223202074, 23450120081, 2266913897519, 191704868748703, 14075699487073288, 906324694033572285, 51875514109305962403, 2672849198449587976472, 125300087299510807859757
Offset: 1

Views

Author

R. H. Hardin, Nov 22 2016

Keywords

Comments

Column 4 of A278435.

Examples

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

Crossrefs

Cf. A278435.

A278433 Number of nX5 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.

Original entry on oeis.org

456, 178352, 67971132, 23450120081, 7817299555828, 2573951428892959, 803631265741510560, 228568783548126804702, 58279844921391047673160, 13321187192307993333262298, 2747056699156070175271175528
Offset: 1

Views

Author

R. H. Hardin, Nov 22 2016

Keywords

Comments

Column 5 of A278435.

Examples

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

Crossrefs

Cf. A278435.

A278434 Number of nX6 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.

Original entry on oeis.org

1128, 1287838, 1796061464, 2266913897519, 2573951428892959, 2817080307689646420, 3058351651772615415451, 3218514217113422076011068, 3172598007779111848619027479, 2870266355084730530696055472589
Offset: 1

Views

Author

R. H. Hardin, Nov 22 2016

Keywords

Comments

Column 6 of A278435.

Examples

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

Crossrefs

Cf. A278435.
Showing 1-5 of 5 results.