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Search: id:A075490
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| A075490 |
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Sum[phi[n]^j,j = 1..n]. |
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+0
1
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| 1, 2, 14, 30, 1364, 126, 335922, 87380, 12093234, 1398100, 111111111110, 22369620, 116719860413532, 94036996914, 40210710958664, 321685687669320, 314824432191309680912, 121871948002098, 749896248023298716143374
(list; graph; listen)
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OFFSET
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1,2
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EXAMPLE
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n=5: phi[5]=4, 4+16+64+256+1024=1364 n=22: phi[22]=10, a(22)=10+100+...10^22=11111111111111111111110, n=101: a(101)=1010101.....010100, etc.
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MATHEMATICA
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Table[Apply[Plus, Table[EulerPhi[w]^j, {j, 1, w}]], {w, 1, 25}]
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CROSSREFS
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Cf. A000010.
Adjacent sequences: A075487 A075488 A075489 this_sequence A075491 A075492 A075493
Sequence in context: A038341 A075718 A093794 this_sequence A031301 A083015 A050591
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KEYWORD
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easy,nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Sep 26 2002
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