22576

Appears in sequences

• Maximal elements of pairs of "Super Unitary Amicable Numbers", sorted by their minimal elements.at n=34A045614
• Sum of diagonal elements and those below it for a square matrix of integers, starting with 1.at n=15A066804
• Expansion of (1+x*C^4)*C^4, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.at n=7A071715
• a(n) is the least k such that (k*prime(n)#)^2 + 1, ((k+1)*prime(n)#)^2 + 1 and ((k+2)*prime(n)#)^2 + 1 are 3 primes, where prime(n)# is the n-th primorial.at n=29A098765
• Triangle read by rows given by [1,1,1,1,1,1,1,1,1,1,...] DELTA [1,1,0,0,0,0,0,0,0,0,0,...] where DELTA is the operator defined in A084938.at n=39A167685
• G.f. satisfies: A(x) = G(x*A(x)) where G(x) = A(x/G(x)) = Sum_{n>=0} x^(n(n+1)/2)*(1+x)^n.at n=10A172405
• Number of (n+1) X 3 0..3 arrays with every 2 X 3 or 3 X 2 subblock having exactly one clockwise edge increases.at n=4A206200
• Number of (n+1)X6 0..3 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases.at n=1A206203
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases.at n=16A206206
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases.at n=19A206206
• Number of (n+1) X (1+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=3A235064
• Number of (n+1) X (4+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=0A235067
• T(n,k) is the number of (n+1) X (k+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=6A235071
• T(n,k) is the number of (n+1) X (k+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=9A235071
• a(n) = 25*n*(n + 1)/2 + 1.at n=42A262221
• a(n) = Sum_{k=0..n} k*A000009(k).at n=26A270105
• Numbers which are representable as a sum of seventeen but no fewer consecutive nonnegative integers.at n=32A270302
• a(n) = n*(6*n^2 - 8*n + 3).at n=16A272378
• Number of multiset partitions of integer partitions of n where all parts have the same product.at n=31A320886