a(n) = number |fdw(P,(n))| of entangled P-words with s=4.

A211311

a(n) = number |fdw(P,(n))| of entangled P-words with s=4.

Terms

    a(0) =1a(1) =68a(2) =34236a(3) =62758896a(4) =304863598320

External references