136338

Appears in sequences

• An accelerator sequence for Catalan's constant.at n=18A094650
• Let M(n) be the n X n matrix m(i,j)=min(i,j) for 1<=i,j<=n then a(n) is the trace of M(n)^(-9).at n=4A114361
• G.f. A(x) satisfies A(x/A(x)^3) = 1/(1-x)^2.at n=5A145168
• Expansion of (5-4*x-12*x^2+6*x^3+3*x^4)/(1-x-4*x^2+3*x^3+3*x^4-x^5).at n=18A189234
• a(n) is the number of basic ideals in the standard Borel subalgebra of the untwisted affine Lie algebra sl_n.at n=8A194460
• Number of inequivalent n X 3 binary matrices, where equivalence means permutations of rows or columns or the symbol set.at n=22A246148