43780

Appears in sequences

• Numbers k such that k+1, k+3, k+7 and k+9 are all primes.at n=24A125855
• Number of (n+1) X 2 0..1 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively.at n=17A204644
• Number of length 3 0..n arrays with each partial sum starting from the beginning no more than two standard deviations from its mean.at n=34A244834
• Numbers m such that m+1, m+3, m+7, m+9 and m+13 are all primes.at n=8A245304
• G.f. A(x) satisfies: x = A(x) * (1 + A(x)) * (1 - 2*A(x)).at n=8A250886
• Number of nX5 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,0) or (-1,-1) and new values introduced in order 0..2.at n=6A275501
• Number of 7 X n 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,0) or (-1,-1) and new values introduced in order 0..2.at n=4A275507
• Expansion of (Product_{k>0} (1 - x^k) / (1 - x^(5*k)))^5 in powers of x.at n=37A285932
• Even numbers that are not the sum or difference of two binary palindromes (A006995).at n=16A290424
• Triangle read by rows: T(n,k) is the number of n-sided cycles with the property that one makes k turns to the right while following its edges.at n=52A365094
• Triangle read by rows: T(n,k) is the number of n-sided cycles with the property that one makes k turns to the right while following its edges.at n=56A365094
• a(n) = Sum_{k=0..floor(2*n/7)} binomial(3*k,2*n-7*k).at n=25A392436