OEIS link for a description of lunar arithmetic
Simply take the larger digit when adding and take the smaller digit when multiplying.
Remove any row in which a NaN appears
Find Rotated Substring
System of equations
Side of an equilateral triangle
Replace pattern 0 1 0 and 1 0 1
Modular multiplicative inverse
Calculate trends in time series
Find two triangular numbers whose sum is input.
Net Present Value of a Stream of Cash Flows
Digit concentration in Champernowne's constant
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