Triangle read by rows: T(n,k) = number of nondecreasing sequences of n positive integers with reciprocals adding up to k (1 <= k <= n).
A156869
Triangle read by rows: T(n,k) = number of nondecreasing sequences of n positive integers with reciprocals adding up to k (1 <= k <= n).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =1a(5) =1a(6) =14a(7) =4a(8) =1a(9) =1a(10) =147a(11) =17a(12) =4a(13) =1a(14) =1a(15) =3462a(16) =164a(17) =18a(18) =4a(19) =1a(20) =1a(21) =294314a(22) =3627a(23) =167a(24) =18a(25) =4a(26) =1a(27) =1a(28) =159330691a(29) =297976
External references
- oeis: A156869