490950

Appears in sequences

• Expansion of e.g.f.: cosh(log(x+1)-arcsin(x))=1+3/4!*x^4-10/5!*x^5+100/6!*x^6-525/7!*x^7...at n=10A013231
• Number of 2n-bead balanced binary strings of fundamental period 2n, rotationally equivalent to reversed complement.at n=15A045664