login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A299206 Ramanujan's tau function (or tau numbers (A000594)) for 5^n. 0

%I #14 Jul 01 2023 16:10:52

%S 1,4830,-25499225,-359001100500,-488895969711875,15167983076643206250,

%T 97133231781274332671875,-271470664160664028370625000,

%U -6054036890966043032024015234375,-15985594659896064584391569753906250,218396847859403327980436336954599609375

%N Ramanujan's tau function (or tau numbers (A000594)) for 5^n.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/TauFunction.html">Tau Function</a>

%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (4830, -48828125).

%F G.f.: 1/(1-4830*x+48828125*x^2).

%F a(n) = A000594(A000351(n)). - _Michel Marcus_, Feb 05 2018

%o (PARI) {a(n) = ramanujantau(5^n)}

%Y Cf. A000594, A000351, A035174, A064556.

%K sign

%O 0,2

%A _Seiichi Manyama_, Feb 05 2018

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 24 12:58 EDT 2024. Contains 371943 sequences. (Running on oeis4.)