77220

Appears in sequences

• Column of Motzkin triangle.at n=10A005323
• Expansion of (1-x)/(1 - x - 4*x^2).at n=13A052923
• a(n) = 2662*n + 22.at n=28A157613
• Half the product of all numbers from A141468(n) up to prime(n).at n=5A161672
• Numbers with prime factorization p*q*r*s^2*t^3 (where p, q, r, s, t are distinct primes).at n=19A190111
• Number of partitions of n such that if the length is k then k is not a part.at n=45A229816
• Number of nX2 0..3 arrays with no element equal to the sum of elements to its left or the sum of elements above it or the sum of the elements diagonally to its northwest, modulo 4.at n=7A239420
• T(n,k)=Number of nXk 0..3 arrays with no element equal to the sum of elements to its left or the sum of the elements above it or the sum of the elements diagonally to its northwest, modulo 4.at n=37A239424
• Triangle T(n,m) = Sum_{k=0..m} (-1)^(m-k)*binomial(m,k)*binomial(n-m+k-1,m-1)*binomial(2*n-3*m+k-1,n-m), T(n,n)=1.at n=56A271776
• Irregular triangle read by rows: T(n,m) = number of lattice paths of type A^Q terminating at point (n, m).at n=45A291083
• a(n) = Pochhammer(n, 5) / 2.at n=9A293615
• Exponential (2,4)-perfect numbers: numbers m such that esigma(esigma(m)) = 4m, where esigma(m) is the sum of exponential divisors of m (A051377).at n=36A328133