51976

Appears in sequences

• Triangle of numbers {a(n,k), n >= 0, 0 <= k <= n} defined by a(0,0)=1, a(n,0)=A000670(n), a(n,n)=A000629(n), a(n,k) = a(n,k-1) + a(n-1,k-1); a(n+1,0) = Sum_{k=0..n} a(n,k).at n=29A073146
• Least number 2k such that p^2 divides the numerator of the Bernoulli number B(2k), where p is the n-th irregular prime, A000928(n).at n=11A092681
• The sum of a triangular array made from a negative 6-fold permutation product.at n=20A105156
• a(n) = prime(n) * Sum_{i=1..n} prime(i).at n=20A143215
• a(n) = 204*2^n - 248.at n=7A278122
• Triangle of palindromic polynomials.at n=31A388426
• Triangle of palindromic polynomials.at n=32A388426