Bi-unitary near-perfect numbers: bi-unitary abundant numbers k such that the abundance d = bsigma(k) - 2*k is a bi-unitary divisor of k, where bsigma(k) is the sum of bi-unitary divisors of k (A188999).
A303359
Bi-unitary near-perfect numbers: bi-unitary abundant numbers k such that the abundance d = bsigma(k) - 2*k is a bi-unitary divisor of k, where bsigma(k) is the sum of bi-unitary divisors of k (A188999).
Terms
- a(0) =24a(1) =40a(2) =56a(3) =80a(4) =88a(5) =104a(6) =120a(7) =224a(8) =360a(9) =432a(10) =672a(11) =832a(12) =992a(13) =1008a(14) =1296a(15) =1456a(16) =1504a(17) =1584a(18) =1888a(19) =1952a(20) =2016a(21) =2160a(22) =2800a(23) =3800a(24) =5624a(25) =5800a(26) =7424a(27) =7616a(28) =9112a(29) =10080
External references
- oeis: A303359