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A237986
Area of smallest square containing n L's with short side lengths 1, 2, ..., n.
1
0, 4, 16, 49, 121, 196, 324, 484, 676, 961, 1296, 1681, 2116, 2704, 3364, 3969, 4761, 5625, 6724
OFFSET
0,2
FORMULA
a(n) = A211372(n)^2
EXAMPLE
Illustration:
.
. a - b b a - - - - b b b b - - - - - - - - a b b
. a a b b a a c c c b b b b - - - - - - - a a b b
. b b b b c c c b b a a - - - - - - - b b b b
. b b b b c c c b b a - d d d d - - - b b b b
. c c c c c c - d d d d - c c c c c c
. c c c c c c - d d d d - c c c c c c
. c c c c c c - d d d d - c c c c c c
. d d d d d d d d c c c
. d d d d d d d d c c c
. d d d d d d d d c c c
. d d d d d d d d - - -
.
. 4 16 49 121
.
CROSSREFS
Sequence in context: A222936 A370019 A119005 * A086601 A224147 A227266
KEYWORD
nonn,hard,more
AUTHOR
Ivan Panchenko, Feb 16 2014
STATUS
approved