117711

Appears in sequences

• Composite palindromes divisible by the sum of their prime factors (counted with multiplicity).at n=11A046348
• Let N(k) and D(k) be the sequences defined in A054765 and A012244; write N(k)* D(k+j ) - N(k+j)*D(k) = (-1)^(k+1)*(k!)^2*P(k) where P(k) is a polynomial in k of degree j-1; sequence gives coefficients of expansion of P(k) in powers of k for j=1,2,3,...at n=46A054798
• Palindromes in A082939.at n=41A082940
• Number of n X 5 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically.at n=8A208115
• 7*n analog to Keith numbers.at n=30A282762
• Palindromes which are a concatenation of three palindromes, each of which has at least 2 digits.at n=7A368020
• a(n) = (Sum_{k=0..n-1}(145*k^2+104*k+18)*C(2k,k)*C(3k,k)^2/(2k+1))/(6n*(2n-1)*C(3n,n)).at n=5A371652