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Number of digits in n-th even superperfect number A061652(n).
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%I #3 Mar 30 2012 17:39:33

%S 1,1,2,2,4,5,6,10,19,27,32,38,157,183,385,663,687,969,1280,1332,2917,

%T 2993,3376,6002,6533,6987,13395,25962,33265,39751,65050,227831,258715,

%U 378632,420921,895932,909525,2098960

%N Number of digits in n-th even superperfect number A061652(n).

%C Also, number of digits in n-th superperfect number A019279(n), if there are no odd superperfect numbers.

%F a(n)=A055642(A061652(n)). - _R. J. Mathar_, May 22 2008

%Y Cf. A019279, A028335, A061193, A061652.

%K base,nonn

%O 1,3

%A _Omar E. Pol_, Apr 08 2008

%E More terms from _R. J. Mathar_, May 22 2008