39611

Appears in sequences

• A triangle sequence made symmetrical by reverse coefficients: t0(n,m)=(2 + n! - m! - (n - m)! + 2 + PartitionsP[n] - PartitionsP[ m] - PartitionsP[n - m]); t(n,m)=(t0(n,m)+Reverse[t0(n,m)])/2.at n=38A156046
• A triangle sequence made symmetrical by reverse coefficients: t0(n,m)=(2 + n! - m! - (n - m)! + 2 + PartitionsP[n] - PartitionsP[ m] - PartitionsP[n - m]); t(n,m)=(t0(n,m)+Reverse[t0(n,m)])/2.at n=42A156046
• Convolution of nonzero heptagonal numbers (A000566) with themselves.at n=10A272103
• a(n) = Sum_{k=0..n} ceiling(phi^k), where phi is the golden ratio (A001622).at n=20A279100