149688

Appears in sequences

• Number of double tangents of order n.at n=24A060784
• a(n) = 27*(n-1)*(n-2)*(n-3)*(3*n-8)/2.at n=8A064197
• Denominator of Cotesian number C(n,1).at n=9A100644
• Numbers with prime factorization pqr^3s^5.at n=19A190475
• Indices of record high values in A036263.at n=18A293155
• Primitive terms of A259850.at n=49A361363
• a(n) = Sum_{k=0..n} binomial(k+7,7) * binomial(k,n-k)^2.at n=7A377159
• a(n) = Sum_{k=0..floor(n/3)} 3^k * 2^(n-3*k) * binomial(k,n-3*k)^2.at n=19A387482