The free spectrum of the variety of bands.
The number of essentially \(n\)-ary term operations in the variety of bands is asymptotically \(\tfrac 1{n^2}K^{2^{n+1}}(1+O(\tfrac 1n))\) , where \(K=\sqrt{2\sqrt{3\sqrt{4\cdots}}}\sim 1.66\).
scientific article; zbMATH DE number 5284767