-483840
domain: Z
Appears in sequences
- a(n) = det(M) where M is an n X n matrix with M[i,j] = lcm(i,j).at n=7A060238
- Expansion of e.g.f.: (1-2*x)*sqrt(1-4*x).at n=7A126089
- G.f.: 1/(1-2*x+2*x^2-x^3+x^4).at n=47A199802
- Trisection 2 of A199802.at n=15A199929
- Triangle read by rows: terms of a binomial decomposition of 1 as Sum(k=0..n)T(n,k).at n=40A244117
- a(n) = 8*7*6*5*4*3*2*1 - 16*15*14*13*12*11*10*9 + 24*23*22*21*20*19*18*17 - ... + (up to the n-th term).at n=12A319891