402192
domain: N
Appears in sequences
- Triangle read by rows: T(n,k) = count of increasing runs in two concatenated k-permutations of [n].at n=30A122823
- The Wiener index of the linear phenylene with n hexagons.at n=27A224454
- a(n) = n*(n + 11)*(n + 22)*(n + 33)*(n + 44)/120.at n=16A264450
- Conductor of elliptic curve y^2 = x^3 - n*x - n.at n=20A387891