0,2

The initial terms coincide with those of A170733, although the two sequences are eventually different.

First disagreement at index 28: a(28) = 16695466095174888231828730113547, A170733(28) = 16695466095174888231828730113638. - Klaus Brockhaus, May 24 2011

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

Index entries for linear recurrences with constant coefficients, signature (12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, -78).

G.f.: (t^28 + 2*t^27 + 2*t^26 + 2*t^25 + 2*t^24 + 2*t^23 + 2*t^22 + 2*t^21 + 2*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)/(78*t^28 - 12*t^27 - 12*t^26 - 12*t^25 - 12*t^24 - 12*t^23 - 12*t^22 - 12*t^21 - 12*t^20 - 12*t^19 - 12*t^18 - 12*t^17 - 12*t^16 - 12*t^15 - 12*t^14 - 12*t^13 - 12*t^12 - 12*t^11 - 12*t^10 - 12*t^9 - 12*t^8 - 12*t^7 - 12*t^6 - 12*t^5 - 12*t^4 - 12*t^3 - 12*t^2 - 12*t + 1).

coxG[{28, 78, -12}] (* The coxG program is at A169452 *) (* Harvey P. Dale, Nov 29 2017 *)

Cf. A170733 (G.f.: (1+x)/(1-13*x)).

Sequence in context: A169075 A169123 A169171 * A169267 A169315 A169363

Adjacent sequences: A169216 A169217 A169218 * A169220 A169221 A169222

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

approved