390720

Appears in sequences

• T(2n-1,n) where T is the array in A054126.at n=7A054133
• Number of reduced words of length n in Coxeter group on 3 generators S_i with relations (S_i)^2 = (S_i S_j)^11 = I.at n=18A166327
• a(n) = 288*n^2 - 96*n (n>=1).at n=36A305073
• a(n) = 1*2*3*4*5 + 6*7*8*9*10 + 11*12*13*14*15 + ... + (up to n).at n=14A319206
• a(n) = 5*4*3*2*1 + 10*9*8*7*6 + 15*14*13*12*11 + ... + (up to the n-th term).at n=14A319869
• Table T(n,k) read by upward antidiagonals. T(n,k) = Sum_{i=1..n} Product_{j=1..k} (i-1)*k+j.at n=25A333446