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 A081929 Sum of the n-th row of A077339. 0
 1, 22, 64, 127, 211, 316, 442, 589, 757, 946, 1156, 2467, 3979, 5692, 7606, 9721, 12037, 14554, 17272, 20191, 23311, 26632, 30154, 33877, 37801, 41926, 46252, 50779, 55507, 60436, 65566, 70897, 76429, 82162, 88096, 94231, 100567, 107104 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Table of n, a(n) for n=1..38. Index entries for linear recurrences with constant coefficients, signature (3,-3,1). FORMULA For n>10, a(n) = 1/2 * (201n^2 - 2001n + 2). From Chai Wah Wu, Jan 12 2023: (Start) a(n) = 3*a(n-1) - 3*a(n-2) + a(n-3) for n > 13. G.f.: x*(900*x^12 - 1080*x^11 - x^2 - 19*x - 1)/(x - 1)^3. (End) CROSSREFS Not the same as A069178 (A069178(12)=1387 <> 2467=a(12) ). Cf. A077339, A077340. Sequence in context: A051874 A140390 A069178 * A305064 A124715 A126376 Adjacent sequences: A081926 A081927 A081928 * A081930 A081931 A081932 KEYWORD base,easy,nonn AUTHOR Amarnath Murthy, Apr 01 2003 EXTENSIONS More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 19 2003 STATUS approved

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Last modified December 7 12:41 EST 2023. Contains 367656 sequences. (Running on oeis4.)