435668420domain: NAppears in sequencesDegree of variety K_{2,n}^2.at n=7A013699Binomial transform of [ 1, 0, 1, 1, 3, 6, 15, 36, 91, 231, 595, ... ], which is essentially binomial(Fibonacci(k) + 1, 2).at n=18A033191