List.sum_fixedLengthDigits_sum

∀ {b : ℕ} (hb : 1 < b) (l : ℕ), ∑ L ∈ List.fixedLengthDigits hb l, L.sum = l * b ^ (l - 1) * b.choose 2

Defined in: Mathlib.Data.Nat.Digits.Lemmas
Cited by: 1 results in Mathlib
Foundations: Depth 85 from the axioms · uses propext, Classical.choice, Quot.sound

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