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.

A179834 Position of zeros in A179831. Complement of A179832.

Original entry on oeis.org

1, 2, 3, 4, 6, 7, 10, 11, 12, 14, 17, 18, 19, 22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36, 37, 38, 39, 42, 43, 44, 45, 46, 47, 50, 51, 52, 53, 54, 57, 58, 59, 60, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 80, 81, 85, 86, 87, 88, 89, 91, 94, 95, 96, 97
Offset: 1

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Author

Antti Karttunen, Aug 03 2010

Keywords

Comments

Probably finite, no more terms after a(119)=164 exist.

Crossrefs

Cf. A179832, and also A179774, A179779.

A179832 Position of ones in A179831.

Original entry on oeis.org

5, 8, 9, 13, 15, 16, 20, 21, 25, 29, 33, 40, 41, 48, 49, 55, 56, 61, 72, 79, 82, 83, 84, 90, 92, 93, 101, 102, 106, 109, 113, 116, 117, 118, 122, 123, 126, 133, 134, 140, 141, 142, 143, 150, 155, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177
Offset: 1

Views

Author

Antti Karttunen, Aug 03 2010

Keywords

Comments

Look at the central column of A179757. Conjecture, from a(46)=165 onward, all integers >= 165 present.

Crossrefs

Cf. A179833-A179834, and also A179772, A179777.

A179771 Quadrisection of the fourth central column of triangle A122242, a(n) = A179770(4*n).

Original entry on oeis.org

1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0
Offset: 1

Views

Author

Antti Karttunen, Aug 03 2010

Keywords

Comments

Conjecture: the last zero (107th) occurs at n=166, after which only ones occur.

Crossrefs

Cf. A179772-A179774, and also A179776, A179831.

Formula

a(n) = A179770(4*n).

A179776 Quadrisection of the fourth central column of triangle A122245, a(n) = A179775((4*n)-2).

Original entry on oeis.org

1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0
Offset: 1

Views

Author

Antti Karttunen, Aug 03 2010

Keywords

Comments

Conjecture: the last zero (108th) occurs at n=163, after which only ones occur.

Crossrefs

Cf. A179777-A179779, and also A179771, A179831.

Formula

a(n) = A179775((4*n)-2).

A179830 The first central column of triangle A179757, i.e., A179763(1), A179763(8), A179763(17), A179763(28), ...

Original entry on oeis.org

1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0
Offset: 1

Views

Author

Antti Karttunen, Aug 03 2010

Keywords

Crossrefs

Cf. A179831-A179834, and also A179770, A179775.

Formula

a(n) = A179763(A028884(n+2)).
Showing 1-5 of 5 results.