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A132928 Concatenation of first n perfect numbers. 2
6, 628, 628496, 6284968128, 628496812833550336, 6284968128335503368589869056, 6284968128335503368589869056137438691328, 62849681283355033685898690561374386913282305843008139952128 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..8.

Omar E. Pol, Determinacion geometrica de los numeros primos y perfectos.

CROSSREFS

Perfect numbers: A000396. Cf. A007908, A019518, A078795.

Sequence in context: A222831 A206458 A265116 * A055317 A321425 A220858

Adjacent sequences:  A132925 A132926 A132927 * A132929 A132930 A132931

KEYWORD

easy,nonn,base

AUTHOR

Omar E. Pol, Sep 05 2007

STATUS

approved

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Last modified October 19 15:50 EDT 2019. Contains 328223 sequences. (Running on oeis4.)