Strongly 2-near perfect numbers.

Terms

a(0) =156a(1) =352a(2) =6832a(3) =60976a(4) =91648a(5) =152812a(6) =260865a(7) =2834572a(8) =3335968a(9) =3532096a(10) =4077388a(11) =5044725a(12) =5725504a(13) =6112576a(14) =8102656a(15) =10557148a(16) =19762876a(17) =39411712a(18) =50718016a(19) =66965104a(20) =111372508a(21) =232774912a(22) =483879808a(23) =2045453824a(24) =6849461025a(25) =7904670976a(26) =8521265152a(27) =11818720108a(28) =13112466688a(29) =13714642432