24805

Appears in sequences

• a(n) = T(n,n+4), T given by A027023.at n=10A027026
• a(n) = T(n,2n-10), T given by A027023.at n=9A027034
• a(n) = n^4 + 2*n^3 + 4*n^2 + 3*n + 1 = ((n+1)^5+n^5) / (2*n+1).at n=12A072025
• a(n) = (3 + 2*n + 6*n^2 + 4*n^3)/3.at n=26A166464
• Numbers k such that sum_{i=1..k} d(i)^2 is a square c^2, where d(i) is the number of divisors of i.at n=16A186429
• Number of (2+1) X (n+1) 0..1 arrays with every 2 X 2 subblock ne-sw antidiagonal difference nondecreasing horizontally and nw+se diagonal sum nondecreasing vertically.at n=33A258555
• Number of 4-cycles in the n X n rook graph.at n=10A288962
• G.f. A(x) satisfies: x = 1 - A(x) - A(x)^3 + A(x)^5.at n=5A295543
• Number of conjugacy classes for a non-abelian group of order p^3, where p is prime: a(n) = p^2 + p - 1 where p = prime(n).at n=36A319597
• a(n) is the number of nonnegative integers that can be represented by lighting only n segments on a 9-segment display, used by the Russian postal service.at n=22A350177
• G.f. A(x) satisfies: A(x) = 1 + x + x^2 * A(x/(1 - x)) / (1 - x)^2.at n=11A351437
• Number of partitions of n whose greatest part is a multiple of 5.at n=47A363047