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.

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A069449 Half the number of 4 X n binary arrays with no path of adjacent 1's or adjacent 0's from top to bottom or side to side.

Original entry on oeis.org

7, 269, 5799, 95783, 1389619, 18772467, 243194821, 3070812013
Offset: 2

Views

Author

R. H. Hardin, Mar 22 2002

Keywords

Crossrefs

Cf. 2 X n A000225, vertical path of 1 A069361-A069395, vertical paths of 0+1 A069396-A069416, vertical path of 1 not 0 A069417-A069428, no vertical paths A069429-A069447, no horizontal or vertical paths A069448-A069452.

A069450 Half the number of 5 X n binary arrays with no path of adjacent 1's or adjacent 0's from top to bottom or side to side.

Original entry on oeis.org

15, 1723, 95783, 3802615, 127780201, 3912171001
Offset: 2

Views

Author

R. H. Hardin, Mar 22 2002

Keywords

Crossrefs

Cf. 2 X n A000225, vertical path of 1 A069361-A069395, vertical paths of 0+1 A069396-A069416, vertical path of 1 not 0 A069417-A069428, no vertical paths A069429-A069447, no horizontal or vertical paths A069448-A069452.

A069451 Half the number of 6 X n binary arrays with no path of adjacent 1's or adjacent 0's from top to bottom or side to side.

Original entry on oeis.org

31, 10123, 1389619, 127780201, 9622763387
Offset: 2

Views

Author

R. H. Hardin, Mar 22 2002

Keywords

Crossrefs

Cf. 2 X n A000225, vertical path of 1 A069361-A069395, vertical paths of 0+1 A069396-A069416, vertical path of 1 not 0 A069417-A069428, no vertical paths A069429-A069447, no horizontal or vertical paths A069448-A069452.
Previous Showing 91-93 of 93 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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