Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the
OEIS Foundation home page.
Table of n, a(n) for n=0..40.
Cf. A046318, A046407.
Sequence in context: A018871 A223021 A046318 * A226064 A157958 A232924
Adjacent sequences: A046372 A046373 A046374 * A046376 A046377 A046378
Patrick De Geest, Jun 15 1998.