1225449
domain: N
Appears in sequences
- 3-magic series constant.at n=8A052460
- Squares of second pentagonal numbers: a(n) = (1/4)*n^2*(3*n+1)^2.at n=27A100256
- Squares of the central trinomial coefficients (A002426).at n=8A168597
- a(n) is the start of the first occurrence of n consecutive perfect powers, all of which are squares with exponents equal to 2 (A111245).at n=15A340661