42435

Appears in sequences

• Numerators of continued fraction convergents to sqrt(866).at n=7A042672
• Denominators of the convergents of the continued fraction for Catalan's constant L(2, chi4), where L(s, chi4) is the Dirichlet L-function for the non-principal character modulo 4.at n=9A153070
• a(n) = 2401*n^2 - 3822*n + 1520.at n=4A157370
• Product of two consecutive odd numbers k, k+2 such that (k*(k+2))+-2 are primes.at n=9A174383
• Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having k increasing cycles of length >=2 (0<=k<= n/2). A cycle (b(1), b(2), ...) is said to be increasing if, when written with its smallest element in the first position, it satisfies b(1) < b(2) < b(3) < ... .at n=27A186757
• a(n) = Sum_{k=0..n} (-1)^k * binomial(n+2*k,n-k) * Fibonacci(k+1).at n=13A390855
• a(n) = Sum_{k=0..n} (-1)^k * binomial(n+2*k+2,n-k) * Fibonacci(k+1).at n=12A390857