0,2

The initial terms coincide with those of A170738, although the two sequences are eventually different.

First disagreement at index 20: a(20) = 13456471561751415850794837, A170738(20) = 13456471561751415850795008. - Klaus Brockhaus, Apr 02 2011

Computed with Magma using commands similar to those used to compute A154638.

Index entries for linear recurrences with constant coefficients, signature (17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, -153).

G.f.: (t^20 + 2*t^19 + 2*t^18 + 2*t^17 + 2*t^16 + 2*t^15 + 2*t^14 + 2*t^13 + 2*t^12 + 2*t^11 + 2*t^10 + 2*t^9 + 2*t^8 + 2*t^7 + 2*t^6 + 2*t^5 + 2*t^4 + 2*t^3 + 2*t^2 + 2*t + 1)/(153*t^20 - 17*t^19 - 17*t^18 - 17*t^17 - 17*t^16 - 17*t^15 - 17*t^14 - 17*t^13 - 17*t^12 - 17*t^11 - 17*t^10 - 17*t^9 - 17*t^8 - 17*t^7 - 17*t^6 - 17*t^5 - 17*t^4 - 17*t^3 - 17*t^2 - 17*t + 1).

coxG[{20, 153, -17}] (* The coxG program is at A169452 *) (* Harvey P. Dale, Jan 20 2020 *)

Cf. A170738 (G.f.: (1+x)/(1-18*x)).

Sequence in context: A168696 A168744 A168792 * A168888 A168936 A168984

Adjacent sequences: A168837 A168838 A168839 * A168841 A168842 A168843

John Cannon and N. J. A. Sloane, Dec 03 2009

approved