At-home preschool is getting intense. Does anyone know the name for a number that can be factored into a step shape? Also, is there an O(1) algorithm to check if any given N is a step shape? I'm stuck Image
Triangular number, thank you! Image
Huzzah, testing if 8x+1 is square is easy to do in my head and works
Ok but that's taking sqrt for granted because I can do it in my head well and x86 has an instruction for it that really O(1)? If this is also bothering you and/or your 3 year old student, see…

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