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.

A116266 n times n+2 gives the concatenation of two numbers m and m-3.

Original entry on oeis.org

7, 7311, 8990, 32523, 67476, 76567, 4891729, 5108270, 8528093, 71588335, 98999900, 399659933006, 600340066993, 723627738226, 877712329767, 998999999000, 3485626998113, 3787100274613, 6212899725386, 6514373001886
Offset: 1

Views

Author

Giovanni Resta, Feb 06 2006

Keywords

Examples

			98999900 * 98999902 = 98009803//98009800, where // denotes
concatenation.

Crossrefs

Cf. A115431, A116252, A116265, A116267, A116273.

A116274 Numbers k such that k*(k+3) gives the concatenation of two numbers m and m-2.

Original entry on oeis.org

9, 99, 362, 636, 713, 922, 999, 8904, 9999, 81817, 99999, 336632, 663366, 999999, 7272726, 9999999, 76470588, 99999999, 333666332, 405436667, 428571428, 447710184, 454545453, 473684210, 526315788, 545454545, 552289814
Offset: 1

Views

Author

Giovanni Resta, Feb 06 2006

Keywords

Crossrefs

Cf. A116143, A116259, A116273, A116275, A116280.

A116272 n times n+1 gives the concatenation of two numbers m and m-2.

Original entry on oeis.org

6, 7282818, 8171728, 4550754022124826467, 5449245977875173533, 8176518705147900806, 8951999555715882882349355522889, 9861090464806791973258446431980
Offset: 1

Views

Author

Giovanni Resta, Feb 06 2006

Keywords

Examples

			8171728 * 8171729 = 6677714//6677712, where // denotes
concatenation.

Crossrefs

Cf. A116141, A116265, A116273, A116285.

A116279 Numbers k such that k*(k+2) gives the concatenation of two numbers m and m-1.

Original entry on oeis.org

36363636363, 45454545454, 54545454545, 63636363636, 72727272727, 81818181818, 90909090909, 428571428571428571428, 571428571428571428571, 714285714285714285714, 857142857142857142857
Offset: 1

Views

Author

Giovanni Resta, Feb 06 2006

Keywords

Examples

			36363636363 * 36363636365 = 13223140496//13223140495, where // denotes concatenation.

Crossrefs

Cf. A102567, A116273, A116280, A116286.
Showing 1-4 of 4 results.

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

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