-374

Appears in sequences

• Generalized sum of divisors function.at n=20A002130
• Partial sums of A073579.at n=50A077039
• Sum at 45 degrees to horizontal in triangle of A081498.at n=33A081499
• Inverse of trinomial triangle A071675.at n=59A103778
• Coordination sequence for Penrose tiling is a(n) + tau*A103906(n), where tau is A001622.at n=4A103907
• Expansion of (x - 1)/(1 - x^2 + x^3 + x^4 - x^5).at n=52A115413
• a(n) = prime(n+3)*prime(n) - prime(n+1)*prime(n+2).at n=35A117301
• Triangle read by rows: a(n,m)=(2*n-1)*(n-m)*(n+m+1)/2, where n is the column and m the row index.at n=51A120476
• Expansion of x*(1+2*x+3*x^2+4*x^3+4*x^4)/(1+x+x^2+x^3-x^5).at n=44A122520
• Expansion of Product_{n >= 1} (1+q^(2*n-1))/((1-q^(4*n))*(1+q^(4*n-2))).at n=39A144558
• Hankel transform of expansion of 1/c(x)^3, c(x) the g.f. of A000108.at n=9A144701
• a(n) = (-1)^n*n*(n+1)*(2*n-5)/6.at n=10A167386
• Triangle read by rows: T(n, m, q) = (1-q^n)*Eulerian(n+1, m) - (1-q^n) + 1, with q = 2.at n=11A174728
• Triangle read by rows: T(n, m, q) = (1-q^n)*Eulerian(n+1, m) - (1-q^n) + 1, with q = 2.at n=13A174728
• a(n) = (-1)^n*(A056040(n+1)*A152271(n)-2^n)/2.at n=9A194590
• Triangle of polynomial coefficients of the polynomial factors defined in A074051.at n=85A197184
• Expansion of (1+4*x+x^2) / ((1-x)^3*(1+x)^4).at n=20A229834
• Table with A235538 as first row, and k-th difference of A235538 as (k+1)-th row, read by antidiagonals.at n=27A235539
• Expansion of (1 - 2*x^2)/(1 + x)^3. Second column of Riordan triangle A248156.at n=30A248158
• Difference between sums of quadratic residues and non-residues modulo n that are coprime to n.at n=65A255643