|
%I #8 Sep 08 2022 08:45:29
%S 0,0,0,0,0,0,0,0,0,0,1,2,2,2,2,2,2,2,2,2,4,6,6,6,6,6,6,6,6,6,9,12,12,
%T 12,12,12,12,12,12,12,16,20,20,20,20,20,20,20,20,20,25,30,30,30,30,30,
%U 30,30,30,30,36,42,42,42,42,42,42,42,42,42,49,56,56,56,56,56,56,56,56,56
%N Tenth-squares: floor(n/10)*ceiling(n/10).
%F Equivalently, floor(n^2/100).
%t f[n_]:=Module[{c=n/10},Floor[c]Ceiling[c]];f[Range[0,90]] (* _Harvey P. Dale_, Apr 04 2011 *)
%o (Magma) [ Floor(n/10)*Ceiling(n/10) : n in [0..100]];
%Y Cf. A002620, A024206, A072280, A002984, A007590, A000212, A118015, A056827, A118013.
%K easy,nonn
%O 0,12
%A _Jonathan Vos Post_, May 27 2007
|
