35285

Appears in sequences

• Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 17.at n=29A051982
• Expansion of Re(x/(1-x-2*i*x^2)), i=sqrt(-1).at n=22A106201
• The number of n-almost primes less than or equal to 9^n, starting with a(0)=1.at n=6A116429
• Number of n X n binary arrays with all ones connected only in a 1100-0110-0011 pattern in any orientation.at n=7A146445
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1100-0110-0011 pattern in any orientation.at n=16A146447
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1100-0110-0011 pattern in any orientation.at n=17A146447
• Number of nondecreasing -n..n vectors of length 4 whose dot product with some other -n..n vector equals 4.at n=13A226343
• Number of partitions p of n such that median(p) = multiplicity(max(p)).at n=48A240209
• Number of compositions of n into distinct parts where each part i is marked with a word of length i over a quaternary alphabet whose letters appear in alphabetical order.at n=8A261842
• Array read by downward antidiagonals: A(n,k) = (k+2)*A(n-1,k+1) + Sum_{j=0..k} A(n-1,j) with A(0,k) = 1, n >= 0, k >= 0.at n=33A370380
• Numbers m that divide the alternating sum Sum_{k=1..m} (-1)^(k+1) * usigma(k).at n=14A379924