155001

Appears in sequences

• Expansion of 1/((1-2x)(1-8x)(1-10x)(1-11x)).at n=4A028018
• Sum of squares of divisors of square numbers.at n=17A065827
• Triangle read by rows: T(n,k) = (n+1,k)-th element of (M^9-M)/8, where M is the infinite lower Pascal's triangle matrix, 1<=k<=n.at n=23A096043
• Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any horizontal, vertical, diagonal or antidiagonal neighbor, and containing the value n(n+1)/2-2.at n=32A211911