0,4
a(n) = ((n*3)-Xmult(n, 3))
Positions of zeros are given by A003714. Cf. A048735.
Diagonal 3 of A061858.
Sequence in context: A016678 A055028 A028591 this_sequence A002915 A127733 A127774
Adjacent sequences: A048725 A048726 A048727 this_sequence A048729 A048730 A048731
nonn
Antti Karttunen, Apr 26 1999
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