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0, 63, 728, 4095, 15624, 46655, 117648, 262143, 531440, 999999, 1771560, 2985983, 4826808, 7529535, 11390624, 16777215, 24137568, 34012223, 47045880, 63999999, 85766120, 113379903, 148035888, 191102975, 244140624, 308915775, 387420488
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| a(n) mod 7 = 0 iff n mod 7 > 0: a(A008589(n))=6; a(A047304(n)) = 0; a(n) mod 7 = 6*(1-A082784(n)).
a(n) = A005563(n-1)*A059826(n) = A068601(n)*A001093(n). - Reinhard Zumkeller, Feb 02 2007
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 1..1000
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MATHEMATICA
| Table[n^6-1, {n, 40}] (* From Vladimir Joseph Stephan Orlovsky, Apr 15 2011 *)
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PROG
| (MAGMA) [n^6 - 1: n in [1..50]]; // Vincenzo Librandi, May 01 2011
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CROSSREFS
| Cf. A024004, A001014, A005563, A123865, A123867, A123868.
Sequence in context: A198399 A115152 A069091 * A024004 A201886 A091027
Adjacent sequences: A123863 A123864 A123865 * A123867 A123868 A123869
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KEYWORD
| nonn
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AUTHOR
| Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 16 2006
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