38857

Appears in sequences

• Expansion of cosh(tan(x)/cos(x)).at n=4A009167
• Expansion of exp(tan(x)/cos(x)).at n=8A009253
• If S*2^k - 3 and S*2^k + 3 are primes for k=0 to 2, then a(n) = S/10.at n=5A093290
• A musically inspired Titius-Bode-like sequence based on the geometric division of 4- and 5-dimensional space: Z_(n+1) = 3 * (C(n-1, 0) + C(n-1, 1) + C(n-1, 2) + C(n-1, 3) + C(n-1, 4) + C(n-1, 5)*A059620(n+6)) + 4.at n=25A209257
• Expansion of Product_{k>=1} (1 + k*x^k)^sigma(k), where sigma = A000203.at n=11A318484