lean_workbook_plus_21837
ProvedOk, now what about the sequence ?
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_21837 : ∃ a : ℕ → ℚ, a 0 = 1 / 1260 ∧ a 1 = 1 / 840 ∧ a 2 = 1 / 630 ∧ a 3 = 1 / 504 ∧ a 4 = 1 / 420 ∧ a 5 = 1 / 360 ∧ a 6 = 1 / 315 ∧ a 7 = 1 / 280 ∧ a 8 = 1 / 252 := by sorry
Source