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A045512
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If decimal expansion of n is ab...d, a(n) = a^a + b^b + ... + d^d (ignoring any 0's).
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4
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0, 1, 4, 27, 256, 3125, 46656, 823543, 16777216, 387420489, 1, 2, 5, 28, 257, 3126, 46657, 823544, 16777217, 387420490, 4, 5, 8, 31, 260, 3129, 46660, 823547, 16777220, 387420493, 27, 28, 31, 54, 283, 3152, 46683, 823570, 16777243, 387420516, 256, 257, 260
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OFFSET
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0,3
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LINKS
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MAPLE
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a:= n-> add(`if`(i=0, 0, i^i), i=convert(n, base, 10)):
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MATHEMATICA
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p[n_]:=Module[{idn=Select[IntegerDigits[n], #>0&]}, Total[idn^idn]]; Array[p, 40, 0] (* Harvey P. Dale, Dec 13 2012 *)
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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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EXTENSIONS
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Checked by Neven Juric (neven.juric(AT)apis-it.hr), Feb 04 2008
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STATUS
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approved
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