A sequence is constructed in the following way: Express the numbers 1, 2, 3, 4, 5,… in binary and stack them, right-justified. Then read the numbers in upward sloping diagonals and convert to decimal. The first four binary numbers are 11, 110, 101, 100, and their decimal equivalents are 3, 6, 5, 4.
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
0 1 1 0
Write a function to compute the nth term in the sequence.
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Four solutions so far, and they are all different. Interesting.
now they are 5 solution yet they are different