131250

Appears in sequences

• Triangle of coefficients in expansion of (5+7x)^n.at n=22A013626
• A convolution triangle of numbers obtained from A036083.at n=15A030527
• Expansion of (-1+1/(1-5*x)^5)/(25*x); related to A036071.at n=5A036083
• Triangle whose (i,j)-th entry is binomial(i,j)*7^(i-j)*5^j.at n=26A038271
• Numbers n such that x^n + x^11 + 1 is irreducible over GF(2).at n=42A057481
• Triangle read by rows: T(n, k) = binomial(n, k)*k^k*(n-k)^(n-k-1) k=0..n-1.at n=26A066320
• Stirling2 triangle with scaled diagonals (powers of 5).at n=32A075500
• Fifth column of triangle A075500.at n=3A075913
• Hypotenuses for which there exist exactly 5 distinct Pythagorean triangles.at n=25A084649
• Triangle read by rows: T(n,r) = number of maximum r-uniform acyclic hypergraphs of order n and size n-r+1, 1 <= r <= n+1.at n=61A135021
• a(n) = binomial(n+6, 6)*5^n.at n=4A140405
• a(n) = 5^n * Catalan(n).at n=5A156058
• Number of 4 X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 1 1 vertically.at n=10A207684
• Numbers n for which n*n'/(n+n') is an integer, where n' is the arithmetic derivative of n.at n=32A210935
• Triangle, read by rows, where T(n,k) = k!*C(n, k)*5^(n-k) for n>=0, k=0..n.at n=30A218016
• Triangle, read by rows, where T(n,k) = k!*C(n, k)*5^(n-k) for n>=0, k=0..n.at n=31A218016
• Positive integers, c, such that there are more than two solutions to the equation a^2 + b^3 = c^4, with a, b > 0.at n=51A242381
• Triangle read by rows: terms T(n,k) of a binomial decomposition of n^n as Sum(k=0..n)T(n,k).at n=30A244137
• Triangle read by rows: T(n,k) is the coefficient A_k in the transformation of 1 + x + x^2 + ... + x^n to the polynomial A_k*(x+k)^k for 0 <= k <= n.at n=50A248826
• Sum_{k=0..n} k^(n-k)*(n+k)^k.at n=4A252710