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A163390 Numbers n such that n^3 can be represented as sum of (at least two) consecutive squares. 1

%I #16 Jan 26 2016 22:38:48

%S 47,65,921,2161,2820,12284,13156,16761,18340,43500,61721,63765,64605,

%T 66317,99359,116180,122009,146821,159371,260165,269588,314919,403130,

%U 524095,690381,813340,827209,869241,985864,1203015,1348761,1942084,3145712,3632486,3867745

%N Numbers n such that n^3 can be represented as sum of (at least two) consecutive squares.

%H Chai Wah Wu, <a href="/A163390/b163390.txt">Table of n, a(n) for n = 1..45</a>

%F a(n)= (A136312(n))^(1/3). [_R. J. Mathar_, Aug 02 2009]

%e a(1) = 47 as 47^3 = 103823 = 22^2 + 23^2 + 24^2 + ... + 68^2.

%K nonn

%O 1,1

%A _Gaurav Kumar_, Jul 26 2009

%E a(6)-a(14) from _Donovan Johnson_, Feb 02 2011

%E a(15)-a(16) from _Donovan Johnson_, Jun 12 2011

%E a(17) from _Donovan Johnson_, Aug 02 2013

%E a(18)-a(35) from _Chai Wah Wu_, Jan 16 2016

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Last modified August 10 23:32 EDT 2024. Contains 375059 sequences. (Running on oeis4.)