210240

Appears in sequences

• Least k such that n! + k^2 is a square.at n=15A038202
• Coefficients in expansion of E''_4(q), where E_4 is the Eisenstein series in A004009.at n=2A145312
• Number of integers in [1..A112141(n)] that are multiples of the first n semiprimes, where A112141(n) is the product of the first n semiprimes.at n=5A166483
• p-INVERT of (0,1,0,1,0,1,...), where p(S) = (1 - S^3)^2.at n=25A291240
• G.f. satisfies: A(x) = (1+x)/(1-x) * A(x^2)*A(x^3)*A(x^4)*...*A(x^n)*... .at n=25A318767
• Expansion of (theta_3(z)*theta_3(23z) + theta_2(z)*theta_2(23z))^6.at n=22A328094
• Numbers m such that the smallest digit in the decimal expansion of 1/m is 4, ignoring leading and trailing 0's.at n=32A352158
• Numbers of uniquely embeddable trees on n vertices.at n=30A378672