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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A166607 Numbers k such that Sum_{i=1..k} i^7 divides Product_{i=1..k} i^7. 5
1, 733, 1637, 2096, 2367, 4231, 5674, 5839, 7585, 8344, 13719, 13753, 14983, 15151, 15197, 15257, 15757, 16595, 17305, 18791, 20701, 21442, 23652, 23738, 24519, 24789, 25474, 25916, 25933, 27474, 27487, 29185, 31455, 32846, 32950, 33421 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..36.

EXAMPLE

a(2) = A125314(7) = 733.

MATHEMATICA

With[{c=Range[40000]^7}, Flatten[Position[#[[1]]/#[[2]]&/@Thread[ {Rest[ FoldList[ Times, 1, c]], Accumulate[c]}], _?IntegerQ]]] (* Harvey P. Dale, Nov 16 2014 *)

CROSSREFS

Cf. A123314, A166602, A060462, A166604, A166605, A166606, A166608, A166609, A166610.

Sequence in context: A178093 A143726 A180919 * A297761 A220625 A260035

Adjacent sequences:  A166604 A166605 A166606 * A166608 A166609 A166610

KEYWORD

nonn

AUTHOR

Alexander Adamchuk, Oct 18 2009

EXTENSIONS

More terms from Max Alekseyev, Sep 30 2010

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 18 06:48 EDT 2019. Contains 322209 sequences. (Running on oeis4.)