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.

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A072072 Least number initiating a chain of n consecutive numbers each of which has maximal prime exponent exactly 3.

Original entry on oeis.org

8, 135, 6858, 2068373, 133799496, 80566783622, 30199064929748
Offset: 1

Views

Author

Labos Elemer, Jun 13 2002

Keywords

Comments

a(7) <= 30199064929748 ("=" if there are no bugs in my program), a(8) > 300000000000000 (unless there's a bug in my program). - Brad Chalfan (bradc(AT)hevanet.com), Nov 13 2002

Examples

			m   = 2068373 = 17*17*17*421,
m+1 = 2068374 = 2*3*7*11*11*11,
m+2 = 2068375 = 5*5*5*37*16547,
m+3 = 2068376 = 2*2*2*47*5501.

Crossrefs

Cf. A071318-A071320, A071125.

Extensions

One more term from Don Reble, Jun 17 2002
a(6) <= 80566783622 from Don Reble, equality established by Brad Chalfan (bradc(AT)hevanet.com), Nov 13 2002
30199064929748 confirmed to be the 7th term by Donovan Johnson, Jun 15 2009
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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