1,1
Probably these are the numbers of the form 16m+4.
Table of n, a(n) for n=1..5.
Tanya Khovanova, Non Recursions
Cf. A017089.
Sequence in context: A172624 A043880 A030002 * A119413 A044446 A072977
Adjacent sequences: A085802 A085803 A085804 * A085806 A085807 A085808
nonn
Yuval Dekel (dekelyuval(AT)hotmail.com), Jul 24 2003
approved