A178219 a(0)=a(1)=a(2)=0, a(3)=1; thereafter a(n) = 4a(n-3)-5a(n-4).

0, 0, 0, 1, 0, 0, 4, -5, 0, 16, -40, 25, 64, -240, 300, 131, -1280, 2400, -976, -5775, 16000, -15904, -18220, 92875, -143616, 6640, 462600, -1038839, 744640, 1817200, -6468356, 8172755, 3545600, -34959424, 65032800, -26681375, -157565696, 434928320, -431889500, -496855909, 2527541760

Offset

0,7

References

G. Mantel, Resten van wederkeerige Reeksen, Nieuw Archief v. Wiskunde, 2nd series, I (1894), 172-184. [From N. J. A. Sloane, Dec 17 2010]

Links

Table of n, a(n) for n=0..40.

Crossrefs

Sequence in context: A320162 A354068 A200013 * A322232 A232397 A360220

Adjacent sequences: A178216 A178217 A178218 * A178220 A178221 A178222

Keyword

sign

Author

N. J. A. Sloane, Dec 19 2010

Status

approved