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Search: id:A152917
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| 0, 1, 2, 9, 64, 625, 7776, 117649, 2097152, 43046721, 1000000000, 25937424601, 743008370688, 23298085122481, 793714773254144, 29192926025390625, 1152921504606846976, 48661191875666868481, 2185911559738696531968
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OFFSET
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0,3
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COMMENT
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A variant of A000169, which is the main entry for this sequence. - N. J. A. Sloane (njas(AT)research.att.com), Dec 19 2008
a(0) = 0
a(n) = n ^ (n - 1), n >= 1
n is a natural number.
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FORMULA
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a(n) = 0 if n = 0
a(n) = n ^ (n - 1), n >= 1
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EXAMPLE
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a(25) = 25 ^ 24
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PROGRAM
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(Other) unsigned long Prevonential(unsigned int n)
{
if (n == 0)
return 0;
return pow(n, n - 1);
}
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CROSSREFS
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Cf. A000169.
Sequence in context: A036777 A000169 A055860 this_sequence A112319 A038038 A048801
Adjacent sequences: A152914 A152915 A152916 this_sequence A152918 A152919 A152920
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KEYWORD
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nonn
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AUTHOR
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ShaoJun Ying (dolphinysj(AT)gmail.com), Dec 15 2008
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