189750

Appears in sequences

• Numbers n such that n^2 can be split into two nonzero squares (perhaps with leading zeros) in exactly two different ways.at n=17A054737
• T(2n+3,n), array T as in A055794.at n=21A055796
• Expansion of Product_{k>=1} ((1 + k*x^k)/(1 - k*x^k)).at n=16A265758
• Number of orbits of Aut(Z^7) as function of the infinity norm n of the representative lattice point of the orbit, when the cardinality of the orbit is equal to 161280.at n=25A266395