Sounds like fun. I'll try and come up with a couple....
sub[1]: a(n)= n × t, where n is an OEIS serial number, and t is the Unix epoch at the time of that sequence's publication to the website.
sub[2]: The number of values in the sequence of serial number n, or 0 if it is unknown, or -1 if it is infinite, multiplied by the Unix epoch at the time of that sequence's publication to the website.
sub[3]: The real part(s) of the imaginary part(s) of all the sequences I was intending on coming up with before submitting this post, but gave up instead because it turned out to be too much effort... (Note: they are, and will remain, "imaginary", for the time being, because I didn't articulate them.)
sub[4]: Each value of the previous sequence, multiplied by the Unix epoch at the time(s) that it would have been had I put forth the effort.
