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%I M3653 N1486 #23 Dec 23 2021 22:44:56
%S 0,4,34,113,268,524,905,1437,2145,3054,4189,5575,7238,9203,11494,
%T 14137,17157,20580,24429,28731,33510,38792,44602,50965,57906,65450,
%U 73622,82448,91952,102160,113097,124788,137258,150533,164636,179594,195432,212175,229847
%N Nearest integer to 4 * Pi * n^3 / 3.
%C Volume of a sphere with radius n (rounded to the nearest integer). - _Wesley Ivan Hurt_, Jan 28 2014
%D H. Gupta, A Table of Values of N_3(t), Proc. National Institute of Sciences of India, 13 (1947), 35-63.
%D N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H T. D. Noe, <a href="/A002101/b002101.txt">Table of n, a(n) for n = 0..1000</a>
%p A002101:=n->round(4 * Pi * n^3/3); seq(A002101(n), n=0..100); # _Wesley Ivan Hurt_, Jan 28 2014
%t Table[Round[4 Pi n^3/3], {n, 0, 100}] (* _T. D. Noe_, May 24 2013 *)
%o (PARI) A002101(n)=round(n^3*4*Pi/3) \\ _M. F. Hasler_, Mar 26 2012
%K nonn,easy
%O 0,2
%A _N. J. A. Sloane_
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