Erroneous duplicate version of A181496.

A165146

Erroneous duplicate version of A181496.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =42a(6) =136a(7) =459a(8) =1594a(9) =5645a(10) =20280a(11) =73659

External references