Many excellent designs for a new banner were submitted. We will use the best of them in rotation.
0,2
Table of n, a(n) for n=0..19.
Sequence in context: A198657 A055759 A086946 * A171319 A007655 A208383
Adjacent sequences: A158527 A158528 A158529 * A158531 A158532 A158533
sign
N. J. A. Sloane, Nov 11 2009
approved
