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.

Previous Showing 11-14 of 14 results.

A069307 Number of 3 X n binary arrays with a path of adjacent 1's from upper left corner to anywhere in right hand column.

Original entry on oeis.org

21, 110, 581, 3070, 16227, 85776, 453423, 2396868, 12670261, 66977242, 354053617, 1871590506, 9893561055, 52299127660, 276462513603, 1461430140016, 7725380293233, 40837737667414, 215875562691877
Offset: 2

Views

Author

R. H. Hardin, Mar 14 2002

Keywords

Crossrefs

Cf. 2 X n A069306, 4 X n A069308, 5 X n A069309, 6 X n A069310, 7 X n A069311, 8 X n A069312, 9 X n A069313, 10 X n A069314, 11 X n A069315, 12 X n A069316, 13 X n A069317, 14 X n A069318, 15 X n A069319, 16 X n A069320, by columns A069294-A069305.

Formula

G.f.: x^2*(21-37*x+14*x^3-8*x^4)/(1+2*x^5-7*x+9*x^2+x^3-4*x^4). - Vladeta Jovovic, Jul 02 2003

A069317 Number of 13 X n binary arrays with a path of adjacent 1's from upper left corner to anywhere in right hand column.

Original entry on oeis.org

22369621, 128409116176, 771923890744731, 4770190643433011072, 30039462248781247552723, 191623912389094140723074272, 1233335138386307928872371551119, 7987403217621240109184116174886680, 51952942502260713728900637278760621953
Offset: 2

Views

Author

R. H. Hardin, Mar 14 2002

Keywords

Crossrefs

Cf. 2 X n A069306, 3 X n A069307, 4 X n A069308, 5 X n A069309, 6 X n A069310, 7 X n A069311, 8 X n A069312, 9 X n A069313, 10 X n A069314, 11 X n A069315, 12 X n A069316, 14 X n A069318, 15 X n A069319, 16 X n A069320, by columns A069294-A069305.

Extensions

More terms from Sean A. Irvine, Apr 26 2024

A069318 14 X n binary arrays with a path of adjacent 1's from upper left corner to anywhere in right hand column.

Original entry on oeis.org

89478485, 1027277763840, 12351638368337101, 152698472130740768840
Offset: 2

Views

Author

R. H. Hardin, Mar 14 2002

Keywords

Crossrefs

Cf. 2 X n A069306, 3 X n A069307, 4 X n A069308, 5 X n A069309, 6 X n A069310, 7 X n A069311, 8 X n A069312, 9 X n A069313, 10 X n A069314, 11 X n A069315, 12 X n A069316, 13 X n A069317, 15 X n A069319, 16 X n A069320, by columns A069294-A069305.

A069319 Number of 15 X n binary arrays with a path of adjacent 1's from upper left corner to anywhere in right hand column.

Original entry on oeis.org

357913941, 8218237436320, 197632881512065275, 4887273170271827787216
Offset: 2

Views

Author

R. H. Hardin, Mar 14 2002

Keywords

Crossrefs

Cf. 2 X n A069306, 3 X n A069307, 4 X n A069308, 5 X n A069309, 6 X n A069310, 7 X n A069311, 8 X n A069312, 9 X n A069313, 10 X n A069314, 11 X n A069315, 12 X n A069316, 13 X n A069317, 14 X n A069318, 16 X n A069320, by columns A069294-A069305.
Previous Showing 11-14 of 14 results.

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

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