OEIS link for a description of lunar arithmetic
Simply take the larger digit when adding and take the smaller digit when multiplying.
Multiply a column by a row
Get the elements of diagonal and antidiagonal for any m-by-n matrix
Split a string into chunks of specified length
Number of Even Elements in Fibonacci Sequence
unique with nan
Duration of a trip in minutes
Divide elements by sum of elements
Find two triangular numbers whose sum is input.
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