1,4
Cf. A000045
Sequence in context: A066889 A077419 A125189 this_sequence A118987 A060699 A062724
Adjacent sequences: A147994 A147995 A147996 this_sequence A147998 A147999 A148000
easy,nonn
Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Nov 19 2008
Search completed in 0.002 seconds