From 446668055087ed1e1f49a19c821c00b649519677 Mon Sep 17 00:00:00 2001 From: filifa Date: Fri, 18 Apr 2025 19:33:41 -0400 Subject: [PATCH] fix typo --- notebooks/problem0028.ipynb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/notebooks/problem0028.ipynb b/notebooks/problem0028.ipynb index 3a92dbe..739e08a 100644 --- a/notebooks/problem0028.ipynb +++ b/notebooks/problem0028.ipynb @@ -19,7 +19,7 @@ "$$g(n) = \\frac{2}{3}n^3 + \\frac{1}{2}n^2 + \\frac{4}{3}n - \\frac{3}{2}$$\n", "Plugging in 1001, we get our answer: $g(1001) = 669171001$.\n", "\n", - "Side note: this practice of writing the natural numbers in a spiral, combined with marking the prime numbers, has been coined the [Ulam spiral](https://en.wikipedia.org/wiki/Ulam_spiral). Somewhat interestingly, lots of primes appear in vertical, horiztonal, and diagonal lines when laid out this way.\n", + "Side note: this practice of writing the natural numbers in a spiral, combined with marking the prime numbers, has been coined the [Ulam spiral](https://en.wikipedia.org/wiki/Ulam_spiral). Somewhat interestingly, lots of primes appear in vertical, horizontal, and diagonal lines when laid out this way.\n", "\n", "## Relevant sequences\n", "* Numbers on diagonals: [A200975](https://oeis.org/A200975)"