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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A221639 5^(5n+1) + 4^(5n+2) + 3^(5n). 1
 22, 32252, 65664390, 169782108716, 494432831031942, 1508131365182857052, 4675059823042234224390, 14570804744329875486495116, 45494077913917911421604180742, 142128354195602915965174073201852, 444109492260384165827568467076384390 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS All terms are multiples of 22. REFERENCES Hugo Steinhaus: Studentenfutter, Urania, Leipzig 1991, #5 LINKS Index entries for linear recurrences with constant coefficients, signature (4392,-4208207,777600000) FORMULA G.f. -22*(1-2926*x+754280*x^2) / ( (243*x-1)*(3125*x-1)*(1024*x-1) ). - R. J. Mathar, Aug 09 2013 PROG (Haskell) a221639 n = 5 ^ (5 * n + 1) + 4 ^ (5 * n + 2) + 3 ^ (5 * n) (PARI) a(n)=5^(5*n+1)+4^(5*n+2)+243^n \\ Charles R Greathouse IV, Aug 09 2013 CROSSREFS Subsequence of A008593. Cf. A000244, A000302, A000351. Sequence in context: A127486 A232847 A191946 * A078398 A280812 A060619 Adjacent sequences:  A221636 A221637 A221638 * A221640 A221641 A221642 KEYWORD nonn,easy AUTHOR Reinhard Zumkeller, Aug 08 2013 STATUS approved

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.

Last modified August 9 04:23 EDT 2022. Contains 356016 sequences. (Running on oeis4.)