OFFSET
1,3
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..48
EXAMPLE
a(5) = 8 because the 5th even superperfect number is 4096, 2^5 = 32, 4096/32 = 128, log_2(128) = 7 (because 2^7 = 128) and 7+1 = 8.
MATHEMATICA
With[{max = 48}, MersennePrimeExponent[Range[max]] - Range[max]] (* Amiram Eldar, Oct 21 2024 *)
CROSSREFS
KEYWORD
nonn,changed
AUTHOR
Omar E. Pol, Nov 07 2007
STATUS
approved