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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A086093 a(n) = 3^n + 2*n*4^(n-1). 0
 1, 5, 25, 123, 593, 2803, 13017, 59531, 268705, 1199331, 5301929, 23245819, 101194737, 437801939, 1883831161, 8067412587, 34402785089, 146158028227, 618862711113, 2612502377435, 10998603062161, 46189948719795, 193545427548185, 809334701221963, 3377982150064353 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Binomial transform of A084859. Second binomial transform of Cullen numbers A002064. LINKS Table of n, a(n) for n=0..24. Index entries for linear recurrences with constant coefficients, signature (11,-40,48). FORMULA G.f.: (1-6*x+10*x^2)/((1-3*x)*(1-4*x)^2). a(n) = 11*a(n-1) - 40*a(n-2) + 48*a(n-3). - Wesley Ivan Hurt, Oct 30 2022 MATHEMATICA CoefficientList[Series[(1 - 6*x + 10*x^2)/((1 - 3*x)*(1 - 4*x)^2), {x, 0, 30}], x] (* Wesley Ivan Hurt, Oct 30 2022 *) CROSSREFS Cf. A002064, A084859. Sequence in context: A249454 A250347 A278282 * A171279 A231636 A099504 Adjacent sequences: A086090 A086091 A086092 * A086094 A086095 A086096 KEYWORD easy,nonn AUTHOR Paul Barry, Jul 10 2003 EXTENSIONS More terms from Wesley Ivan Hurt, Oct 30 2022 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 October 3 22:39 EDT 2023. Contains 365872 sequences. (Running on oeis4.)