login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A069021 Start of the first occurrence of n consecutive numbers divisible by a square. 3
1, 8, 48, 242, 844, 22020, 217070, 1092747, 8870024, 221167422, 221167422, 47255689915, 82462576220, 1043460553364, 79180770078548, 3215226335143218, 23742453640900972 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..17.

MATHEMATICA

a = {1, 1}; k = 4; Do[ While[ Min[a] < 2, k++; a = Drop[a, 1]; a = Append[ a, Max[ Transpose[ FactorInteger[k]] [[2]] ]]]; Print[k - n + 1]; k++; a = Append[ a, Max[ Transpose[ FactorInteger[k]] [[2]] ]], {n, 2, 9}]

CROSSREFS

Apart from first term, identical to A045882.

Sequence in context: A081084 A230931 A073390 * A079763 A079785 A225977

Adjacent sequences:  A069018 A069019 A069020 * A069022 A069023 A069024

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Apr 02 2002

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 15 04:00 EST 2018. Contains 317225 sequences. (Running on oeis4.)