0,2

The initial terms coincide with those of A170752, although the two sequences are eventually different.

First disagreement at index 23: a(23) = 42836449082912327935376594716065264, A170752(23) = 42836449082912327935376594716065792. - Klaus Brockhaus, Apr 19 2011

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

Index entries for linear recurrences with constant coefficients, signature (31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, -496).

G.f.: (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)/(496*t^23 - 31*t^22 - 31*t^21 - 31*t^20 - 31*t^19 - 31*t^18 - 31*t^17 - 31*t^16 - 31*t^15 - 31*t^14 - 31*t^13 - 31*t^12 - 31*t^11 - 31*t^10 - 31*t^9 - 31*t^8 - 31*t^7 - 31*t^6 - 31*t^5 - 31*t^4 - 31*t^3 - 31*t^2 - 31*t + 1).

coxG[{23, 496, -31}] (* The coxG program is at A169452 *) (* Harvey P. Dale, Jun 07 2021 *)

Cf. A170752 (G.f.: (1+x)/(1-32*x)).

Sequence in context: A168854 A168902 A168950 * A169046 A169094 A169142

Adjacent sequences: A168995 A168996 A168997 * A168999 A169000 A169001

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

approved