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1, 2, 4, 8, 16, 64, 32, 184, 352, 704, 1408, 1880, 2824, 14032, 10328, 56128, 100576, 145784, 189472, 370304, 731752, 4388248, 2924096, 11175712, 15965704, 31930448, 63861880, 383165344, 255439712, 1021772344, 510875648, 2550188248, 5619691648, 9689861048, 17830350904, 79068724264, 34109913224, 192259976368, 133338241880
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OFFSET
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0,2
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LINKS
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FORMULA
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a(0) = 1, for n >= 1, a(n) = A265342(a(n-1)).
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EXAMPLE
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2^5 = 32 in base 3 = "1012" (= A007089(32)) as 1*27 + 1*3 + 2*1 = 32. 2^6 = 64 in base 3 = "2101" as 2*27 + 1*9 + 1*1 = 64. "1012" reversed is "2101" and vice versa, thus a(5) = 64 and a(6) = 32.
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PROG
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(Scheme, two alternatives)
(PARI) base(n) = {my(a=[n%3]); while(0<n\=3, a=concat(n%3, a)); a}
a(n) = subst(Polrev(base(2^n)), x, 3); \\ Altug Alkan, Dec 29 2015
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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