312987

Appears in sequences

• a(n) = n^2*(n+1)*(n+2)^2/6.at n=17A004256
• A modified Heron sequence starting from 1, 2.at n=10A134588
• Number of n X 2 0..2 arrays with every repeated value in every row and column one larger mod 3 than the previous repeated value, and upper left element zero.at n=6A267947
• T(n,k)=Number of nXk 0..2 arrays with every repeated value in every row and column one larger mod 3 than the previous repeated value, and upper left element zero.at n=29A267952
• T(n,k)=Number of nXk 0..2 arrays with every repeated value in every row and column one larger mod 3 than the previous repeated value, and upper left element zero.at n=34A267952
• T(n,k)=Number of nXk 0..2 arrays with every repeated value in every row not one larger and in every column one larger mod 3 than the previous repeated value, and upper left element zero.at n=34A268092
• Numbers n such that n and n+1 both have 18 divisors.at n=31A274360
• Denominator of 3F2([3*n, -n, n+1],[2*n+1, n+1/2], 1).at n=7A277520
• Expansion of Product_{k>=1} 1/(1+x^k)^((-1)^k*k^2).at n=26A307484