190400

Appears in sequences

• Expansion of (1-2*x-x^2)/((1-2*x)*(1-2*x+2*x^2)).at n=13A038508
• a(n) = sigma(2*n^3) - sigma(n^3).at n=38A225959
• Third diagonal sequence of the Sheffer triangle A094816 (special Charlier).at n=33A290312
• Square array A(n,k), n>=0, k>=0, read by antidiagonals downwards, where column k is the expansion of Product_{j=0..k} (1 + j*x)/(1 - j*x).at n=61A383900
• Expansion of Product_{k=0..4} (1 + k*x)/(1 - k*x).at n=6A383911