0,2
a(n) = A155955(n,4) for n>3. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jan 31 2009]
Sequence in context: A138333 A070056 A074151 this_sequence A115111 A113173 A077072
Adjacent sequences: A016801 A016802 A016803 this_sequence A016805 A016806 A016807
nonn,easy
N. J. A. Sloane (njas(AT)research.att.com).
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