OFFSET
1,4
LINKS
Jinyuan Wang, Table of n, a(n) for n = 1..18
FORMULA
a(n) = (A061652(n)/(2^n)) - 1.
EXAMPLE
a(5) = 127 because the 5th even superperfect number is 4096 and 2^5 = 32 and (4096/32) - 1 = 127.
CROSSREFS
KEYWORD
nonn
AUTHOR
Omar E. Pol, Nov 07 2007
EXTENSIONS
Offset changed to 1 by and a(11)-a(12) from Jinyuan Wang, Mar 15 2020
STATUS
approved