%I A060852
%S A060852 10,21,36,78,210
%N A060852 Sum of number of pips on dice in shape of Platonic solids.
%C A060852 This is obviously a finite sequence, since there are only five Platonic 
               solids.
%H A060852 Wikipedia, <a href="http://en.wikipedia.org/wiki/Dice">Dice</a>.
%e A060852 The third number in the sequence is 36 because the third Platonic solid 
               has eight faces and the pips on an eight-faced die add up to 36 [by 
               sum_1^n(n) = 1/2 * n * (n+1), so 1/2 * 8 * 9 = 36 for n = 8].
%t A060852 # (# + 1)/2 & /@ {4, 6, 8, 12, 20} (* Robert G. Wilson v, (rgwv(AT)rgwv.com), 
               Apr 18 2008 *)
%o A060852 (Perl) for $n (4, 6, 8, 12, 20) { print $n*($n+1)/2 }
%Y A060852 Cf. A053016.
%Y A060852 Sequence in context: A082581 A075846 A164714 this_sequence A089584 A095824 
               A086225
%Y A060852 Adjacent sequences: A060849 A060850 A060851 this_sequence A060853 A060854 
               A060855
%K A060852 fini,full,nonn
%O A060852 1,1
%A A060852 Philip Newton (pne(AT)writeme.com), Aug 09 2001