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A132928
Concatenation of first n perfect numbers.
2
6, 628, 628496, 6284968128, 628496812833550336, 6284968128335503368589869056, 6284968128335503368589869056137438691328, 62849681283355033685898690561374386913282305843008139952128
OFFSET
1,1
CROSSREFS
Perfect numbers: A000396. Cf. A007908, A019518, A078795.
Sequence in context: A222831 A206458 A265116 * A055317 A321425 A220858
KEYWORD
easy,nonn,base
AUTHOR
Omar E. Pol, Sep 05 2007
STATUS
approved