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A087354
Smallest square which is the concatenation of n nonzero squares.
0
1, 49, 144, 1444, 11449, 1119364, 36144144, 251444449, 991494144, 4914991449, 149991994944, 149991994944, 98191114994449, 118194491449441, 1991164114941444, 9141411499911441, 119499194999141136
OFFSET
1,2
EXAMPLE
a(4) = 1444 is the concatenation of 1,4,4 and 4.
a(5)=11449 and is not 10404 as zeros are not allowed.
CROSSREFS
Sequence in context: A345115 A009404 A316121 * A098442 A088535 A045897
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Sep 08 2003
EXTENSIONS
More terms from David Wasserman, May 12 2005
STATUS
approved