1,1

with(combinat): a:=proc(n) if numbpart(2*n) mod 2 = 0 then 2*n else fi end: seq(a(n), n=1..100); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Mar 31 2007

Sequence in context: A114272 A108468 A165593 this_sequence A122208 A106358 A002510

Adjacent sequences: A127216 A127217 A127218 this_sequence A127220 A127221 A127222

nonn

Zak Seidov (zakseidov(AT)gmail.com), Mar 28 2007