a(n) is the number of possible choices for the first n terms of a "mean-central" sequence, where a monotonically increasing sequence of positive integers {b(n)} is called "mean-central" if for each positive integer k, the arithmetic mean of the first b(k) terms is exactly b(k).
A383192
a(n) is the number of possible choices for the first n terms of a "mean-central" sequence, where a monotonically increasing sequence of positive integers {b(n)} is called "mean-central" if for each positive integer k, the arithmetic mean of the first b(k) terms is exactly b(k).
Terms
- a(0) =1a(1) =2a(2) =2a(3) =3a(4) =3a(5) =4a(6) =8a(7) =16a(8) =20a(9) =25a(10) =27a(11) =48a(12) =72a(13) =107a(14) =149a(15) =260a(16) =372a(17) =511a(18) =653a(19) =1032a(20) =1192a(21) =1713a(22) =2218a(23) =3992a(24) =5504a(25) =7729a(26) =10452a(27) =16397a(28) =21700a(29) =32292
External references
- oeis: A383192