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 1-4 of 4 results.

A115772 Integers i such that 13*i = A048720bi(21,i).

Original entry on oeis.org

0, 5, 10, 15, 20, 21, 30, 31, 40, 42, 45, 47, 60, 61, 62, 63, 80, 84, 85, 90, 94, 95, 120, 122, 124, 125, 126, 127, 160, 165, 168, 170, 173, 175, 180, 181, 188, 189, 190, 191, 240, 244, 245, 248, 250, 252, 253, 254, 255, 320, 330, 336, 340, 341, 346, 350, 351
Offset: 0

Views

Author

Antti Karttunen, Jan 30 2006

Keywords

Comments

Here * stands for ordinary multiplication and A048720 is the carryless (GF(2)[X]) multiplication.
a(n) appears to be the set of all n that can be expressed as x OR 4x for the bitwise OR operation. [From Gary Detlefs Dec 20 2010]

Links

Crossrefs

Row 13 of A115872. Cf. A048717, A115767, A115770. Superset of A115774 ? A115776 gives the terms which are not in A115774. A115773 shows this sequence in binary.
Cf. A178891

A115774 Integers i such that 15*i = A048720bi(23,i).

Original entry on oeis.org

0, 5, 10, 20, 21, 40, 42, 80, 84, 85, 160, 168, 170, 320, 336, 340, 341, 640, 645, 672, 680, 682, 1280, 1285, 1290, 1344, 1360, 1364, 1365, 2560, 2565, 2570, 2580, 2581, 2688, 2693, 2720, 2728, 2730, 5120, 5125, 5130, 5140, 5141, 5160, 5162, 5376
Offset: 0

Views

Author

Antti Karttunen, Jan 30 2006

Keywords

Comments

Here * stands for ordinary multiplication and A048720 is the carryless (GF(2)[X]) multiplication.

Links

Crossrefs

Cf. A048717, A115767, A115770. Subset of A115772 ? A115776 gives the terms of A115772 which do not occur here. Differs from A062052 for the first time at n=18, where A115774(18)=645 while A062052(18)=672. A115775 shows this sequence in binary.

A115770 Integers i such that 7*i = A048720bi(11, i), where A048720bi implements the dyadic function given in A048720 (see A001317).

Original entry on oeis.org

0, 7, 14, 15, 28, 30, 31, 56, 60, 62, 63, 112, 120, 124, 126, 127, 224, 240, 248, 252, 254, 255, 448, 455, 480, 496, 504, 508, 510, 511, 896, 903, 910, 911, 960, 967, 992, 1008, 1016, 1020, 1022, 1023, 1792, 1799, 1806, 1807, 1820, 1822, 1823, 1920
Offset: 0

Views

Author

Antti Karttunen, Jan 30 2006

Keywords

Comments

Here * stands for ordinary multiplication and A048720 is the carryless (GF(2)[X]) multiplication.

Links

Crossrefs

Row 7 of A115872 (conjecture: also row 5).
Cf. A001317, A048717, A048720, A115767, A115772, A115774, A115776.
A115771 shows this sequence in binary.

A115768 Integers i such that 2*i XOR 5*i = 3*i, but 4*i XOR i is not 5*i.

Original entry on oeis.org

11, 22, 43, 44, 86, 88, 171, 172, 176, 179, 203, 342, 344, 352, 355, 358, 395, 406, 683, 684, 688, 691, 704, 707, 710, 715, 716, 779, 790, 811, 812, 1366, 1368, 1376, 1379, 1382, 1408, 1411, 1414, 1419, 1420, 1430, 1432, 1547, 1558, 1579, 1580
Offset: 1

Views

Author

Antti Karttunen, Jan 30 2006

Keywords

Comments

XOR is A003987.

Crossrefs

Cf. Setwise difference of A115767 and A048719 ? A115769 shows this sequence in binary.
Showing 1-4 of 4 results.

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

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