1,2
A067581(a(n)) = a(n).
Searched up to A067581(10^7). The smallest integer not yet in A067581 is 2746513. [From Donovan Johnson (donovan.johnson(AT)yahoo.com), Oct 01 2009]
Sequence in context: A004850 A141709 A062683 * A161980 A183533 A132576
Adjacent sequences: A137854 A137855 A137856 * A137858 A137859 A137860
nonn,more
Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 15 2008
a(16)-a(22) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Oct 01 2009