23639044
domain: N
Appears in sequences
- Squares of Catalan numbers.at n=9A001246
- a(n) = C(floor(n/2 + 1/2))*C(floor(n/2 + 1)) where C(i) = Catalan numbers A000108.at n=17A005817
- Duplicate of A001246.at n=9A151342
- a(n) is the end of the first occurrence of n consecutive perfect powers, all of which are squares with exponents equal to 2 (A111245).at n=25A340662