A325670 First term of n-th difference sequence of (floor(k*r)), r = sqrt(6), k >= 0.

2, 0, 1, -3, 7, -15, 31, -63, 127, -255, 510, -1011, 1968, -3717, 6720, -11439, 17874, -24309, 24309, 0, -92358, 352485, -997569, 2485242, -5754024, 12680955, -26924184, 55410642, -110821283, 215426355, -406270425, 740354804, -1294617072, 2145852303

Offset

1,1

Links

Clark Kimberling, Table of n, a(n) for n = 1..200

Mathematica

Table[First[Differences[Table[Floor[Sqrt[6]*n], {n, 0, z}], n]], {n, 0, 50}]

Crossrefs

Cf. A022840, A325664, A325671.

Sequence in context: A325746 A325842 A153506 * A271701 A271699 A216701

Adjacent sequences: A325667 A325668 A325669 * A325671 A325672 A325673

Keyword

easy,sign

Author

Clark Kimberling, May 13 2019

Status

approved