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 1-10 of 16 results. Next

A165478 Positions of zeros in A165477.

Original entry on oeis.org

0, 131070, 131071, 262141, 262142, 393212, 393213, 524283, 524284, 655354, 655355, 786425, 786426, 917496, 917497, 1048567, 1048568, 1179638, 1179639, 1310709, 1310710, 1441780, 1441781, 1572851, 1572852, 1703922, 1703923
Offset: 0

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Author

Antti Karttunen, Sep 21 2009

Keywords

Crossrefs

See also A165479. Compare also to A165473, A165483.

Formula

a(n) = floor(n/2)*131071 + (n modulo 2)*131070

A165479 a(n) = Least i in range [A165478(n),A165478(n+1)] for which abs(A165477(i)) gets the maximum value in that range.

Original entry on oeis.org

43690, 131070, 174761, 262141, 305832, 393212, 436903, 524283, 567974, 655354, 699045, 786425, 830116, 917496, 961187, 1048567, 1092258, 1179638, 1223329, 1310709, 1354400, 1441780, 1485471, 1572851, 1616542, 1703922
Offset: 0

Views

Author

Antti Karttunen, Sep 21 2009

Keywords

Comments

The corresponding maximum values are 570,0,570,0,570,0,570,0,570,0,570,0,570,0,570,0,570,0,... (period 2 sequence). Note that also A165477(87380) = 570 (as 131071 is 4k+3 prime), and A165477(65535) = 285 = 570/2.

Formula

a(n) = floor(n/2)*131071 + (1+2*(n modulo 2))*43690

A165487 Squared version of A165477.

Original entry on oeis.org

0, 1, 4, 1, 4, 9, 4, 9, 16, 25, 36, 49, 36, 25, 36, 25, 36, 49, 64, 49, 64, 49, 64, 81, 64, 81, 64, 49, 64, 81, 64, 81, 100, 81, 100, 121, 144, 121, 100, 121, 144, 121, 100, 121, 144, 169, 196, 225, 196, 225, 256, 225, 196, 169, 144, 169, 196, 225, 256, 289, 256
Offset: 0

Views

Author

Antti Karttunen, Sep 21 2009

Keywords

Comments

Period 131071. See comments in A165479.

Crossrefs

a(n) = A000290(A165477(n)). Cf. A165486, A165488.

A165472 Partial sums of A165471.

Original entry on oeis.org

0, 1, 2, 1, 2, 1, 0, -1, 0, 1, 0, -1, -2, -1, -2, -1, 0, 1, 2, 3, 2, 3, 2, 1, 0, 1, 2, 1, 0, -1, 0, -1, 0, 1, 2, 3, 4, 5, 6, 5, 4, 3, 4, 3, 2, 1, 0, -1, -2, -1, 0, -1, 0, 1, 0, 1, 0, -1, -2, -3, -2, -3, -4, -5, -4, -5, -4, -5, -4, -3, -2, -1, 0, -1, 0, -1, 0, 1, 0, 1, 0, 1, 0, -1, 0, -1, -2
Offset: 0

Views

Author

Antti Karttunen, Sep 21 2009

Keywords

Comments

Period 65537.
Maximum value is 160 at a(65537n + 16382) and a(65537n + 16384); minimum value is -160 at a(65537n + 49152) and a(65537n + 49154). - Charles R Greathouse IV, Aug 06 2012

Crossrefs

A165486 gives the squared version. Positions of zeros: A165473. See also A165474, A165475. Compare also to A165477, A165482.

A165482 Partial sums of A165481.

Original entry on oeis.org

0, 1, 2, 3, 4, 3, 4, 3, 4, 5, 4, 3, 4, 3, 2, 1, 2, 1, 2, 3, 2, 1, 0, -1, 0, 1, 0, 1, 0, 1, 0, -1, 0, -1, -2, -1, 0, -1, 0, -1, -2, -1, -2, -3, -4, -5, -6, -5, -4, -3, -2, -3, -4, -3, -2, -1, -2, -1, 0, -1, -2, -1, -2, -3, -2, -1, -2, -3, -4, -5, -4, -5, -4, -3, -4, -3, -2, -1, -2
Offset: 0

Views

Author

Antti Karttunen, Sep 21 2009

Keywords

Comments

Period 28657.

Crossrefs

A165488 gives the squared version. Positions of zeros: A165483. See also A165484, A165485. Compare also to A165472, A165477.

A165582 Partial sums of A165581.

Original entry on oeis.org

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

Views

Author

Antti Karttunen, Sep 22 2009

Keywords

Comments

Period 524287. The largest value 658 occurs in four positions: a(184560) = a(184562) = a(339724) = a(339726) = 658. Note that a(262143) = 255 and a(174762) = a(349524) = 510. (Cf. to A165477 and see comments at A165479).

Crossrefs

Positions of zeros: A165583. See also A165584, A165585. Similar sequences: A165472, A165477, A165482, A165575-A165579, A165582, A165587, A165592, A165597.

Programs

A165587 Partial sums of A165586.

Original entry on oeis.org

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

Views

Author

Antti Karttunen, Sep 22 2009

Keywords

Comments

Period 514229.

Crossrefs

Positions of zeros: A165588. See also A165589, A165590. Similar sequences: A165472, A165477, A165482, A165575-A165579, A165582, A165587, A165592, A165597.

A165592 Partial sums of A165591.

Original entry on oeis.org

0, 1, 0, 1, 2, 3, 2, 1, 0, 1, 0, 1, 2, 1, 2, 3, 4, 3, 2, 1, 2, 1, 0, 1, 0, 1, 2, 3, 2, 1, 0, -1, -2, -1, 0, -1, 0, -1, 0, -1, -2, -1, 0, 1, 2, 3, 2, 1, 2, 3, 2, 1, 0, -1, -2, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, -2, -1, -2, -1, 0, -1, -2, -3, -2, -1, -2, -3, -2, -3, -2, -1, -2, -3, -4
Offset: 0

Views

Author

Antti Karttunen, Sep 22 2009

Keywords

Comments

Period 59701.

Crossrefs

Positions of zeros: A165593. See also A165594, A165595. Similar sequences: A165472, A165477, A165482, A165575-A165579, A165582, A165587, A165592, A165597.

A165597 Partial sums of A165596.

Original entry on oeis.org

0, 1, 2, 3, 4, 5, 6, 5, 6, 7, 8, 7, 8, 9, 8, 9, 10, 9, 10, 9, 10, 9, 8, 9, 10, 11, 12, 13, 12, 13, 14, 15, 16, 15, 14, 13, 14, 13, 12, 13, 14, 15, 14, 15, 14, 15, 16, 17, 18, 19, 20, 19, 20, 21, 22, 21, 20, 19, 20, 19, 20, 19, 20, 19, 20, 21, 20, 19, 18, 19, 18, 17, 18, 17, 16, 17
Offset: 0

Views

Author

Antti Karttunen, Sep 22 2009

Keywords

Comments

Period 59881.
First entry < 0: a(17698) = -1.

Crossrefs

Positions of zeros: A165598. See also A165599, A165590. Similar sequences: A165472, A165477, A165482, A165575-A165579, A165582, A165587, A165592, A165597.

A165575 Partial sums of A165573.

Original entry on oeis.org

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

Views

Author

Antti Karttunen, Sep 22 2009

Keywords

Comments

Period 257.

Crossrefs

Showing 1-10 of 16 results. Next