A152953 a(n) = A136007(n)*(A136007(n)+1)/2.
6, 28, 496, 8128, 33550336, 8589869056, 137438691328, 2305843008139952128, 2658455991569831744654692615953842176, 14474011154664524427946373126085988481573677491474835889066354349131199152128
Offset: 1
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