145860

Appears in sequences

• Partial sums of A051947.at n=12A050483
• a(n) = (5*n + 9)*binomial(n+8, 8)/9.at n=9A055844
• Denominator of 2*Sum(C(n,w)/w,w=1..n/2-1)+C(n, n/2)/(n/2) if n is even otherwise of 2*Sum(C(n,w)/w,w=1..(n-1)/2).at n=32A085572
• Tenth column of (1,5)-Pascal triangle A096940.at n=9A096947
• Central coefficients of the triangle A132047.at n=9A144706
• Smallest pentagonal number with n distinct prime factors.at n=5A156236
• Numbers with prime factorization pqrstu^2.at n=14A189985
• Number of -n..n arrays x(0..3) of 4 elements with zero sum and no two neighbors equal.at n=29A199706
• Numbers k such that the sum of the distinct prime divisors of k equals three times the largest prime divisor of k.at n=10A200090
• Triangle read by rows: T(n, k) = v(n, k)*((1/v(n, k)) mod prime(k)), where v(n, k) = (Product_{j=1..n} prime(j))/prime(k), n >= 1, 1 <= k <= n.at n=24A240673
• Denominator of 2*Sum_{k=0..n} binomial(n,k)^2*binomial(n+k,k)^2*(H(n+k)-H(n-k)) where H(n) = Sum_{k=1..n} 1/k.at n=17A334887
• Numbers k such that 2520*k is a highly composite number.at n=45A352318
• Triangle read by rows: T(n, k) = denominator(M(n, k)) where M is the inverse matrix of A368846.at n=53A368848
• Numbers k such that binomial(k^2,k) == 0 (mod k^3).at n=24A371474