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A036509
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Smallest square containing exactly n 2's.
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2
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25, 225, 22201, 2002225, 21022225, 212722225, 11222224225, 132922222225, 12222722202201, 22222220262025, 1222522204222225, 22292262226224225, 2222262262926922225, 22226224222205212225, 2222222222222640225, 22222262422274682222225, 1222212242622225512222224, 2220022223125222222222201
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..18.
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FORMULA
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a(n) = A048347(n)^2 [From Max Alekseyev, Oct 20 2008]
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CROSSREFS
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Cf. A048347. [From Jon E. Schoenfield (jonscho(AT)hiwaay.net), Jan 24 2009]
Sequence in context: A048384 A191486 A030485 * A034981 A053919 A053927
Adjacent sequences: A036506 A036507 A036508 * A036510 A036511 A036512
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KEYWORD
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nonn,base
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AUTHOR
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David W. Wilson
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EXTENSIONS
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a(13) = 2222262262926922225 from Max Alekseyev, Oct 20 2008
a(14) = 22226224222205212225 from Max Alekseyev, Nov 10 2008
a(15) = 2222222222222640225 from Max Alekseyev, Dec 05 2008
a(16) = 22222262422274682222225, a(17) = 1222212242622225512222224 and a(18) = 2220022223125222222222201 from Jon E. Schoenfield (jonscho(AT)hiwaay.net), Dec 25 2008
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STATUS
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approved
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