42061

Properties

Appears in sequences

• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (F(2), F(3), ...), t = A000201 (lower Wythoff sequence).at n=27A024593
• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (F(2), F(3), F(4), ...), t = A000201 (lower Wythoff sequence).at n=26A025107
• Primes followed by a [10,2,10] prime difference pattern of A001223.at n=32A052376
• Fifth diagonal of triangle A064094.at n=20A064096
• Greatest prime factor of prime(n+1)^2 + prime(n)^2.at n=45A069485
• Primes of form (prime(n)^2 + prime(n+1)^2)/2.at n=9A093343
• Primes from merging of 5 successive digits in decimal expansion of cos(1).at n=6A104961
• Prime averages of two successive perfect prime powers.at n=8A131697
• Numerators in the resistance triangle: T(k,n)=b, where b/c is the resistance distance R(k,n) for k resistors in an n-dimensional cube.at n=40A212045
• Numbers n such that there is precisely 1 group of order n, 2 of order n + 1 and 3 of order n + 2.at n=27A296024
• Primes that are palindromic in factorial base.at n=27A333421
• Prime numbersat n=4398