%I #10 Aug 13 2020 18:28:14
%S 0,4,16,36,64,121,196,289,441,576,784,1024,1369,1681,2116,2500,3025,
%T 3600,4356,5041
%N Area of smallest square containing n dominoes with short side lengths 1, 2, ..., n.
%C a(n) >= ceiling(n*(n + 1)*(2n + 1)/3).
%H Erich Friedman, <a href="https://erich-friedman.github.io/packing/domino/">Dominoes in Squares</a>
%F a(n) = A237886(n)^2.
%e Illustration:
%e .
%e . - - a - - - a a - - - - - - - - a a b b
%e . a a a - - - b b b b - - c c c c c c b b
%e . b b b b b b b b - - c c c c c c b b
%e . b b b b c c c c c c c c c c c c b b
%e . c c c c c c d d d d d d d d
%e . c c c c c c d d d d d d d d
%e . d d d d d d d d
%e . d d d d d d d d
%e .
%e . 4 16 36 64
%e .
%Y Cf. A237986.
%K nonn,hard,more
%O 0,2
%A _Ivan Panchenko_, Feb 21 2014