21498

Appears in sequences

• Invariants for a hidden action of S_(n+1) on Cayley trees with n vertices.at n=18A115868
• Number of ways of placing kings with no more than 2 mutual attacks on an n X n chessboard symmetric about both diagonal and antidiagonal.at n=10A143879
• Integers n where n^3 + (n+1)^3 is a Taxicab number A001235.at n=13A259836
• Triangle read by rows: T(n,k) number of ways of partitioning the (n+5)-element multiset {1,1,1,1,1,1,2,3,...,n} into exactly k nonempty parts, n >= 0 and 1 <= k <= n + 5.at n=75A291120
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-2) + 2, where a(0) = 1, a(1) = 2, b(0) = 3.at n=17A294534
• Sum of the squares of the number of parts in all partitions of n.at n=18A296010
• 1/(Integral_{x=0..1} x^(x^(x^n)) dx - 1/2), rounded to the nearest integer.at n=33A322009
• a(n) = [x^prime(n)] Product_{k=1..n} (x^prime(k) + 1 + 1/x^prime(k)).at n=13A369390