1,2
An inverse to A005670.
Ed Pegg, Jr., Mrs Perkin's Quilt
Cf. A005670, A089047.
Sequence in context: A016085 A018122 A074732 * A054911 A137267 A123576
Adjacent sequences: A089043 A089044 A089045 * A089047 A089048 A089049
nonn
R. K. Guy (rkg(AT)cpsc.ucalgary.ca), Dec 03 2003
More terms from Ed Pegg Jr (ed(AT)mathpuzzle.com), Dec 03 2003
Corrected and extended by Ed Pegg Jr (ed(AT)mathpuzzle.com), Apr 18 2010