1,1
Is this sequence infinite?
a(3)=15 because A078142(15) = A006530(15) = 5 and this is the first time 5 occurs.
Cf. A078142, A006530, A078327.
Sequence in context: A009455 A007709 A190339 * A038111 A123475 A193341
Adjacent sequences: A078325 A078326 A078327 * A078329 A078330 A078331
more,nonn
Jason Earls (zevi_35711(AT)yahoo.com), Nov 24 2002