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%I #14 Jun 05 2018 10:17:56
%S 6,12,20,24,30,42,56,60,72,90,105,110,120,132,140,156,168,180,182,210,
%T 240,252,272,280,306,336,342,360,380,420,462,495,504,506,552,560,600,
%U 630,650,660,702,720,756,812,840,858,870,930,990,992,1056,1092,1120,1122,1190
%N Numbers that are the number of permutations of a set of balls of at least three distinct colors.
%F A027480(k) = k * (k + 1) * (k + 2) / 2 is in the sequence for k >= 2.
%e There are 30 permutations of 5 balls where 2 are red, 2 are yellow and 1 is blue.
%Y A002378 is a subsequence.
%Y Cf. A027480, A304938.
%K nonn,easy
%O 1,1
%A _David A. Corneth_, May 24 2018
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