A026036 (d(n)-r(n))/5, where d = A006527 and r is the periodic sequence with fundamental period (4,1,4,0,1).

0, 2, 4, 9, 15, 23, 35, 49, 68, 90, 116, 148, 184, 227, 275, 329, 391, 459, 536, 620, 712, 814, 924, 1045, 1175, 1315, 1467, 1629, 1804, 1990, 2188, 2400, 2624, 2863, 3115, 3381, 3663, 3959, 4272, 4600, 4944, 5306, 5684, 6081, 6495, 6927, 7379, 7849, 8340, 8850, 9380, 9932, 10504, 11099, 11715

Offset: 2

Author

Clark Kimberling

Keywords

• nonn
• easy

Links

• Index entries for linear recurrences with constant coefficients, signature (3,-3,1,0,1,-3,3,-1)

Programs

Mathematica

LinearRecurrence[{3,-3,1,0,1,-3,3,-1},{0,2,4,9,15,23,35,49},60] (* Harvey P. Dale, Jun 09 2018 *)

Formula

G.f.: [(2-2x+x^2)(1+x^2)x^3]/[(1-x)^3(1-x^5)].