37241

Appears in sequences

• Brilliant numbers k such that 2k+1 is also brilliant.at n=21A085649
• Triangle T(n,k), n>=1, 1<=k<=n, where the e.g.f. for column k satisfies: A_k(x) = exp(x*A_k(x^k/k!)).at n=47A143565
• E.g.f. satisfies A(x) = exp(x*A(x^3/3!)).at n=10A143567
• Numbers for which the root mean square of nontrivial divisors is an integer and which are not a square of prime numbers.at n=42A247137
• a(n) gives the odd leg of one of the two Pythagorean triangles with hypotenuse A080109(n) = A002144(n)^2. This is the smaller of the two possible odd legs.at n=20A253802
• Real part of (n + i)^4.at n=14A272870
• Expansion of e.g.f. exp( x * exp(x^3/6) ).at n=10A354551