This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A279231 Expansion of 1/((1-x)^2*(1-3*x+3*x^2)). 2
 1, 5, 15, 34, 62, 90, 91, 11, -231, -716, -1444, -2172, -2171, 17, 6579, 19702, 39386, 59070, 59071, 23, -177123, -531416, -1062856, -1594296, -1594295, 29, 4782999, 14348938, 28697846, 43046754, 43046755, 35, -129140127, -387420452, -774840940, -1162261428 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Colin Barker, Table of n, a(n) for n = 0..1000 Index entries for linear recurrences with constant coefficients, signature (5,-10,9,-3). FORMULA a(n) = 5*a(n-1) - 10*a(n-2) + 9*a(n-3) - 3*a(n-4) for n>3. a(n) = 3*a(n-1) - 3*a(n-2) + n + 1, with a(-1) = a(-2) = 0. PROG (PARI) Vec(1/((1-x)^2*(1-3*x+3*x^2)) + O(x^30)) \\ Colin Barker, Dec 08 2016 CROSSREFS Cf. A001477, A045618, A077859. Sequence in context: A055004 A147264 A147150 * A238340 A162513 A006003 Adjacent sequences:  A279228 A279229 A279230 * A279232 A279233 A279234 KEYWORD sign,easy AUTHOR Philippe Deléham, Dec 08 2016 EXTENSIONS Incorrect term corrected by Colin Barker, Dec 09 2016 STATUS approved

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

Last modified February 19 18:22 EST 2019. Contains 320327 sequences. (Running on oeis4.)