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 A152100 G.f.: 1 - 2*x*(-7 - 10*x + x^2)/(x - 1)^4. 2
 1, 14, 76, 218, 472, 870, 1444, 2226, 3248, 4542, 6140, 8074, 10376, 13078, 16212, 19810, 23904, 28526, 33708, 39482, 45880, 52934, 60676, 69138, 78352, 88350, 99164, 110826, 123368, 136822, 151220, 166594, 182976, 200398, 218892, 238490 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Harvey P. Dale, Table of n, a(n) for n = 0..1000 Index entries for linear recurrences with constant coefficients, signature (4, -6, 4, -1). FORMULA a(n) = 4*a(n-1) - 6*a(n-2) + 4*a(n-3) - a(n-4), n > 4. a(n) = 2*n*(8*n^2 + 12*n + 1)/3, n > 0. - R. J. Mathar, Sep 22 2009 MATHEMATICA Join[{1}, LinearRecurrence[{4, -6, 4, -1}, {14, 76, 218, 472}, 40]] (* Harvey P. Dale, Aug 07 2012 *) CROSSREFS Cf. A006071. Sequence in context: A296996 A270704 A200554 * A173962 A200547 A240045 Adjacent sequences:  A152097 A152098 A152099 * A152101 A152102 A152103 KEYWORD nonn,easy AUTHOR N. J. A. Sloane, Sep 21 2009, based on email from R. J. Mathar, Mar 22 2009 EXTENSIONS More terms from R. J. Mathar, Sep 22 2009 STATUS approved

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Last modified September 19 07:08 EDT 2021. Contains 347554 sequences. (Running on oeis4.)