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A037890
a(n)=(1/2)*Sum{|d(i)-e(i)|} where Sum{d(i)*4^i} is the base 4 representation of n and e(i) are the digits d(i) in reverse order.
0
0, 0, 0, 1, 0, 1, 2, 2, 1, 0, 1, 3, 2, 1, 0, 1, 0, 1, 2, 1, 0, 1, 2, 1, 0, 1, 2, 1, 0, 1, 2, 2, 1, 0, 1, 2, 1, 0, 1, 2, 1, 0, 1, 2, 1, 0, 1, 3, 2, 1, 0, 3, 2, 1, 0, 3, 2, 1, 0, 3, 2, 1, 0, 1, 0, 1, 2, 2, 1, 2, 3, 3, 2, 3, 4, 4, 3, 4, 5, 2, 1, 2, 3, 1, 0, 1, 2, 2, 1, 2
OFFSET
1,7
CROSSREFS
Sequence in context: A172101 A301365 A109246 * A037898 A037836 A194522
KEYWORD
nonn,base
STATUS
approved