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A206528
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5^n concatenated with itself.
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2
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11, 55, 2525, 125125, 625625, 31253125, 1562515625, 7812578125, 390625390625, 19531251953125, 97656259765625, 4882812548828125, 244140625244140625, 12207031251220703125, 61035156256103515625, 3051757812530517578125, 152587890625152587890625
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OFFSET
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0,1
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LINKS
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FORMULA
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EXAMPLE
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a(1)=55 because 5^1 concatenated with 5^1 is 55.
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MATHEMATICA
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Table[FromDigits[Join[IntegerDigits[5^n], IntegerDigits[5^n]]], {n, 0, 20}]
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PROG
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(Magma) [Seqint(Intseq(5^n) cat Intseq(5^n)): n in [0..20]];
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CROSSREFS
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KEYWORD
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nonn,base,easy
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AUTHOR
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STATUS
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approved
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