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 A325672 First term of n-th difference sequence of (floor(k*r)), r = sqrt(7), k >= 0. 3
 2, 1, -2, 4, -7, 10, -10, 1, 26, -80, 161, -242, 242, 1, -730, 2188, -4376, 6580, -6733, 1140, 13718, -32945, 18920, 158356, -851599, 2896920, -8097220, 20058301, -45540944, 96506230, -193012459, 367077448, -667617643, 1166803110, -1968991970, 3225375253 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Clark Kimberling, Table of n, a(n) for n = 1..200 MATHEMATICA Table[First[Differences[Table[Floor[Sqrt[7]*n], {n, 0, 30}], n]], {n, 0, 50}] CROSSREFS Cf. A022841, A325664, A325673. Sequence in context: A366883 A306810 A325747 * A279586 A275762 A350626 Adjacent sequences: A325669 A325670 A325671 * A325673 A325674 A325675 KEYWORD easy,sign AUTHOR Clark Kimberling, May 15 2019 STATUS approved

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Last modified September 19 12:32 EDT 2024. Contains 376012 sequences. (Running on oeis4.)