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 1-7 of 7 results.

A379063 a(n) = min{A379059(n), A379060(n)}.

Original entry on oeis.org

0, 1, 2, 5, 6, 7, 10, 11, 12, 17, 18, 19, 20, 21, 27, 28, 29, 30, 31, 37, 38, 39, 40, 41, 42, 43, 49, 50, 51, 57, 58, 59, 60, 65, 66, 67, 68, 69, 70, 71, 72, 73, 82, 83, 84, 85, 86, 87, 88, 89, 90, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 144, 145, 146, 151, 152, 153, 154, 155, 156, 157, 158, 159
Offset: 0

Views

Author

N. J. A. Sloane, Dec 27 2024

Keywords

Crossrefs

A379064 a(n) = max{A379059(n), A379060(n)}.

Original entry on oeis.org

0, 4, 3, 9, 8, 16, 15, 14, 13, 22, 23, 24, 25, 26, 33, 34, 35, 36, 32, 46, 45, 44, 48, 47, 52, 53, 54, 55, 56, 64, 63, 62, 61, 78, 77, 76, 75, 79, 80, 81, 74, 92, 93, 94, 95, 96, 97, 98, 99, 100, 91, 113, 114, 115, 116, 117, 118, 119, 120, 121, 112, 136, 135, 134, 138, 137, 141, 140, 139, 143, 142, 147, 133, 148, 149, 150, 163, 164, 165, 166, 162, 169, 168, 167, 161, 170
Offset: 0

Views

Author

N. J. A. Sloane, Dec 27 2024

Keywords

Crossrefs

A379787 a(n) = A379060(n) - 2*n.

Original entry on oeis.org

0, 2, -1, 3, 0, 6, 3, 0, -3, -1, -2, -3, -4, 0, -1, -2, -3, -4, -5, -1, -2, -3, -4, -5, -6, 3, 2, 1, 0, -1, -2, -3, -4, 12, 9, 6, 3, 5, 4, 3, -6, 10, 9, 8, 7, 6, 5, 4, 3, 2, -9, 11, 10, 9, 8, 7, 6, 5, 4, 3, -8, 14, 11, 8, 10, 7, 9, 6, 3, 5, 2, 5, -11, -2, -3, -4, 11, 10, 9, 8, 2, 7, 4, 1, -7, 0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11
Offset: 0

Views

Author

N. J. A. Sloane, Jan 13 2025

Keywords

Crossrefs

A379059 Index of n in A377091, or -1 if n does not appear there.

Original entry on oeis.org

0, 1, 2, 5, 6, 7, 10, 11, 12, 22, 23, 24, 25, 21, 33, 34, 35, 36, 32, 46, 45, 44, 48, 47, 52, 43, 49, 50, 51, 64, 63, 62, 61, 65, 66, 67, 68, 69, 70, 71, 72, 73, 82, 83, 84, 85, 86, 87, 88, 89, 90, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 188
Offset: 0

Views

Author

N. J. A. Sloane, Dec 26 2024

Keywords

Comments

It is conjectured that every integer appears in A377091.
Conjecture 1: For n >= 10, |a(n) - 2*n| < 2*sqrt(n); for n >= 1000, |a(n) - 2*n| < 1.59*sqrt(n) (compare A379786). - N. J. A. Sloane, Jan 19 2025
Conjecture 2: lim sup |a(n) - 2*n|/sqrt(n) = sqrt(2) as n -> oo. - N. J. A. Sloane and Paolo Xausa, Feb 02 2025

Crossrefs

A379786 a(n) = A379059(n) - 2*n.

Original entry on oeis.org

0, -1, -2, -1, -2, -3, -2, -3, -4, 4, 3, 2, 1, -5, 5, 4, 3, 2, -4, 8, 5, 2, 4, 1, 4, -7, -3, -4, -5, 6, 3, 0, -3, -1, -2, -3, -4, -5, -6, -7, -8, -9, -2, -3, -4, -5, -6, -7, -8, -9, -10, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12, 2, 1, 0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, 16, 13
Offset: 0

Views

Author

N. J. A. Sloane, Jan 13 2025

Keywords

Comments

Conjecture: For n >= 10, |a(n)| < 2*sqrt(n); for n >= 1000, |a(n)| < 1.59*sqrt(n). - N. J. A. Sloane, Jan 19 2025

Crossrefs

A379065 a(n) = A379064(n) - A379063(n).

Original entry on oeis.org

0, 3, 1, 4, 2, 9, 5, 3, 1, 5, 5, 5, 5, 5, 6, 6, 6, 6, 1, 9, 7, 5, 8, 6, 10, 10, 5, 5, 5, 7, 5, 3, 1, 13, 11, 9, 7, 10, 10, 10, 2, 19, 11, 11, 11, 11, 11, 11, 11, 11, 1, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 25, 13, 11, 14, 12, 15, 13, 11, 14, 12, 16, 1, 4, 4, 4, 12, 12, 12, 12, 7, 13, 11, 9, 2, 10, 17, 15, 13, 11, 14, 14, 14, 14, 14, 14, 14, 14, 1, 17, 15, 18, 16, 14, 10
Offset: 0

Views

Author

N. J. A. Sloane, Dec 27 2024

Keywords

Comments

This is the number of steps between the appearances of n and -n in A377091.

Crossrefs

A379069 Nonnegative numbers k such that the index of -k in A377091 is <= the index of k.

Original entry on oeis.org

0, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 29, 30, 31, 32, 73, 74, 75, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 146, 147, 148
Offset: 1

Views

Author

N. J. A. Sloane, Dec 28 2024

Keywords

Comments

Numbers k >= 0 such that A379060(k) <= A379059(k).

Crossrefs

Showing 1-7 of 7 results.