1,6
a(12)=3 because 9=3^2 is the nearest power to 12 (12-9=3).
Adjacent sequences: A061667 A061668 A061669 this_sequence A061671 A061672 A061673
Sequence in context: A025880 A058755 A128519 this_sequence A108063 A026729 A109466
nonn
Michel ten Voorde (seqfan(AT)tenvoorde.org) Jun 16 2001
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