a(n) is the least k such that the average number of bi-unitary divisors of {1..k} is >= n.
A344273
a(n) is the least k such that the average number of bi-unitary divisors of {1..k} is >= n.
Terms
- a(0) =1a(1) =6a(2) =24a(3) =80a(4) =273a(5) =960a(6) =3336a(7) =11480a(8) =39648a(9) =136952a(10) =472416a(11) =1630164a(12) =5625480a(13) =19412736a(14) =66992016a(15) =231184800a(16) =797806152a(17) =2753187210a(18) =9501109380a(19) =32787848746
External references
- oeis: A344273