OFFSET
1,6
EXAMPLE
a(6) = 20 as A025610(6) = 12 and has prime signature (1, 2) as it is 2^(2) * 3^(1). The largest abundant number with prime signature (1, 2) is 20 = 2^(2) * 5^(1).
CROSSREFS
KEYWORD
nonn
AUTHOR
David A. Corneth, Apr 12 2021
STATUS
approved