login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A089081
26th powers: a(n) = n^26.
7
0, 1, 67108864, 2541865828329, 4503599627370496, 1490116119384765625, 170581728179578208256, 9387480337647754305649, 302231454903657293676544, 6461081889226673298932241, 100000000000000000000000000
OFFSET
0,3
FORMULA
a(n) = n^26.
Completely multiplicative sequence with a(p) = p^26 for prime p. Multiplicative sequence with a(p^e) = p^(26e). - Jaroslav Krizek, Nov 01 2009
From Amiram Eldar, Oct 09 2020: (Start)
Dirichlet g.f.: zeta(s-26).
Sum_{n>=1} 1/a(n) = zeta(26) = 1315862*Pi^26/11094481976030578125.
Sum_{n>=1} (-1)^(n+1)/a(n) = 33554431*zeta(26)/33554432 = 22076500342261*Pi^26/186134520519971831808000000. (End)
MATHEMATICA
Range[0, 9]^26 (* Alonso del Arte, Apr 26 2015 *)
PROG
(Magma) [n^26: n in [0..15]]; // Vincenzo Librandi, Jun 19 2011
(PARI) a(n)=n^26 \\ Charles R Greathouse IV, Jun 28 2015
CROSSREFS
KEYWORD
nonn,mult,easy
AUTHOR
Douglas Winston (douglas.winston(AT)srupc.com), Dec 04 2003
STATUS
approved