%I
%S 3,11,19,31,35,59,75,91,111,115,131,151,179,235,255,311,335,339,371,
%T 375,399,411,431,439,495,515,531,539,551,591,619,675,739,791,795,811,
%U 839,851,871,915,951,999,1015,1035,1039,1055,1071,1075,1155,1231,1351
%N Odd values of n > 1 for which there are nhyperperfect numbers.
%C ((3*a(i)+1)/2)^2*(3*a(i)+4) is a(i)hyperperfect.
%D J. Roberts, Lure of the Integers, Math. Assoc. America, 1992, p. 177.
%D R. K. Guy, Unsolved Problems in Number Theory, B2.
%H J. S. McCranie, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL3/mccranie.html">A study of hyperperfect numbers</a>, J. Int. Seqs. Vol. 3 (2000) #P00.1.3.
%H Daniel Minoli, <a href="http://dx.doi.org/10.1090/S00255718198005592069">Issues In NonLinear Hyperperfect Numbers</a>, Mathematics of Computation, Vol. 34, No. 150, April 1980, pp. 639645.
%Y Cf. A007592.
%K nonn
%O 1,1
%A _Jud McCranie_
