89712

Appears in sequences

• Numbers k such that 6^k+5^(k-1) is prime.at n=24A093765
• Expansion of x*(4-x)/( (2x-1)*(x^2-x-1)).at n=16A120461
• Number of sequences of n integers p(i) i=0..n-1 with 0<=p(i)<=6*i and -6<p(i)-p(i-1)<=6.at n=5A180911
• Self-convolution of the central Stirling numbers of the second kind.at n=5A187655
• Consider all 3 X 3 matrices M whose entries are the n-th to (n+8)-th primes prime(n), ..., prime(n+8), in any order. a(n) is the sum of the number of M such that det(M) is divisible by prime(n+i), for i from 0 to 8.at n=8A339105
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,0) = 0^n and T(n,k) = k * Sum_{r=0..n} binomial(n,r) * binomial(3*r+k,n)/(3*r+k) for k > 0.at n=61A378318