71552

Appears in sequences

• Number of ways to place n nonattacking composite pieces queen + rider[1,5] on an n X n chessboard.at n=15A189875
• a(n) = Fibonacci(n)*A000143(n) for n>=1 with a(0)=1, where A000143(n) is the number of ways of writing n as a sum of 8 squares.at n=7A205964
• Indices of records in A245203 (= least k>=0 such that 4n+3 is the mean of primes 4(n-k)+3 and 4(n+k)+3).at n=27A245205
• Numbers whose prime indices and prime signature have the same mean.at n=33A359903
• E.g.f.: exp(Sum_{k>=1} binomial(2*k,k) * x^k).at n=5A370326
• a(0) = 1, a(1) = 0; a(n) = a(n-2) + Sum_{k=0..n-1} k * a(k) * a(n-1-k).at n=9A385287