2306304

Appears in sequences

• Iteration of unitary-sigma function: a(1) = 2, a(n) = usigma(a(n-1)).at n=35A059460
• 3-quantum transitions in systems of N>=3 spin 1/2 particles, in columns by combination indices.at n=32A213345
• 5-quantum transitions in systems of N>=5 spin 1/2 particles, in columns by combination indices.at n=27A213347
• a(n) = phi(12^n+1), where phi is Euler's totient function (A000010).at n=6A366716
• Triangle read by rows: T(n, k) = 2^(2*n)*JacobiP(n - k, k, -1/2 - n, -1).at n=39A380865
• Integers x such that sigma(x)^2 - 3*x^2 is a square.at n=29A385810