1,2
All terms so far enter the cycle of length 81, cf. A117521. - Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jun 12 2006
N. J. A. Sloane, Sequences of RADD type
Sequence in context: A108969 A166745 A200183 * A077103 A036499 A107607
Adjacent sequences: A118513 A118514 A118515 * A118517 A118518 A118519
nonn,more
N. J. A. Sloane (njas(AT)research.att.com), May 06 2006
a(10) to a(25) from Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jun 12 2006