A138872 - OEIS

%I #5 Mar 30 2012 17:33:54

%S 22,44,1616,6464,409096,655536,262144,107824,115976,309056,811064,

%T 850864,343576,265064,520544,737504,223176,129536,953496,142304,

%U 239056,173776,140096,215736,224376,201256,427336,268104,260504,256656,373224,870944

%N Concatenation of first 3 digits and last 3 digits of n-th even superperfect number A061652(n).

%C Also, concatenation of first 3 digits and last 3 digits of n-th superperfect number A019279(n), if there are no odd superperfect numbers.

%Y Cf. A019279, A061652, A138866, A138877, A138870, A138871.

%K base,nonn,less

%O 1,1

%A _Omar E. Pol_, Apr 02 2008

%E More terms from _Max Alekseyev_, Feb 11 2012