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 1-3 of 3 results.

A037260 a()=A037260 and its first [ A037261 ], 2nd [ A037262 ] and 3rd [ A037263 ] differences together include every number at most once and are monotonic and minimal.

Original entry on oeis.org

1, 3, 9, 26, 62, 127, 233, 393, 621, 932, 1342, 1869, 2533, 3355, 4357, 5562, 6994, 8678, 10641, 12911, 15518, 18493, 21868, 25676, 29951, 34728, 40044, 45937, 52446, 59611, 67474, 76078, 85467, 95686, 106781, 118799, 131788, 145797
Offset: 0

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Author

N. J. A. Sloane

Keywords

Comments

5 is the only number less than 100 not used in any of the 4 sequences - Larry Reeves (larryr(AT)acm.org), Sep 25 2000

Examples

			After 1 3 9 26 62
------ 2 6 17 36
------- 4 11 19
-------- 7 8
the next free number is 10 which we CAN add to 4th row.

Crossrefs

A037260-A037263 are 4-rowed analog of A037257-A037259. See A005228, A030124 for 2-rowed version.

Extensions

More terms from Larry Reeves (larryr(AT)acm.org), Sep 25 2000

A037261 First differences of A037260.

Original entry on oeis.org

2, 6, 17, 36, 65, 106, 160, 228, 311, 410, 527, 664, 822, 1002, 1205, 1432, 1684, 1963, 2270, 2607, 2975, 3375, 3808, 4275, 4777, 5316, 5893, 6509, 7165, 7863, 8604, 9389, 10219, 11095, 12018, 12989, 14009, 15079, 16200, 17373, 18599, 19880, 21217
Offset: 0

Views

Author

N. J. A. Sloane

Keywords

Crossrefs

Cf A037262, A037263.

Extensions

More terms from Larry Reeves (larryr(AT)acm.org), Sep 25 2000

A037263 Third differences of A037260.

Original entry on oeis.org

7, 8, 10, 12, 13, 14, 15, 16, 18, 20, 21, 22, 23, 24, 25, 27, 28, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 55, 56, 57, 58, 59, 60, 61, 63, 64, 66, 67, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 84, 85, 86, 87, 88, 89
Offset: 0

Views

Author

N. J. A. Sloane

Keywords

Crossrefs

Cf. A037261, A037262.

Extensions

More terms from Larry Reeves (larryr(AT)acm.org), Sep 25 2000
Showing 1-3 of 3 results.

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

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