1,1
For "Generations" see A048448-A048455. See also A047844.
Sequence in context: A154840 A205102 A011154 * A096838 A096007 A059252
Adjacent sequences: A048463 A048464 A048465 * A048467 A048468 A048469
nonn
Patrick De Geest (pdg(AT)worldofnumbers.com), May 15 1999.