Post #1157491
2026-04-14 20:45 UTC
2025 was the first squared-triangled-squared-triangle number for 2024 years, and I spent the whole year not knowing that!
https://youtu.be/aulrY8Y4VW8
And it won’t happen again till the year 3△▢△▢ = 443556, which, barring unexpectedly rapid and impressive progress in medical science, I am unlikely to see.
Replies (1)
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@pozorvlak@mathstodon.xyz 2026-04-14 21:31
@robinhouston you're just going to casually leave the fact that the 36th triangle number is 666 unmentioned?