21450

Appears in sequences

• Highest degree of an irreducible representation of symmetric group S_n of degree n.at n=12A003040
• Degrees of irreducible representations of alternating group A_13.at n=54A003868
• Degrees of irreducible representations of symmetric group S_13.at n=99A003877
• Degrees of irreducible representations of symmetric group S_13.at n=100A003877
• Triangle of Mahonian numbers T(n,k): coefficients in expansion of Product_{i=0..n-1} (1 + x + ... + x^i), where k ranges from 0 to A000217(n-1). Also enumerates permutations by their major index.at n=106A008302
• Triangle of Mahonian numbers T(n,k): coefficients in expansion of Product_{i=0..n-1} (1 + x + ... + x^i), where k ranges from 0 to A000217(n-1). Also enumerates permutations by their major index.at n=114A008302
• Number of partitions of n that do not contain 9 as a part.at n=38A027343
• Number of symmetric types of (4,2n)-hypergraphs under action of complementing group C(4,2).at n=9A029941
• "CFK" (necklace, size, unlabeled) transform of 2,2,2,2...at n=22A032139
• a(n) = C(n)*(7*n + 1) where C(n) = Catalan numbers (A000108).at n=7A050477
• a(n) = Sum_{k=1..n} lcm(n,k).at n=38A051193
• Values of e, the lesser key or generating number for Pythagorean triangles in which S (the odd short leg) and U (the hypotenuse) are twin primes.at n=43A051892
• a(n) = (n+3)*binomial(n+8, 8)/3.at n=7A053310
• a(n) = (3*n+4)*binomial(n+7, 7)/4.at n=7A054487
• Numbers k such that 9^k == -1 (mod k-1).at n=6A055692
• Highest degree of an irreducible representation of the alternating group A_n of degree n.at n=12A060955
• Numbers k such that the number of steps to reach 1 in '3x+1' problem equals tau(k), the number of divisors of k.at n=31A070980
• Large-q series expansion for exponential of bulk free energy of the square-lattice zero-temperature Potts antiferromagnet, divided by (q-1)^2/q, in terms of the variable z = 1/(q - 1).at n=25A090673
• Triangle read by rows: T(n,k) is the number of standard tableaux of shape (n,n,k) (0<=k<=n).at n=24A094236
• Eighth column (m=7) of (1,3)-Pascal triangle A095660.at n=9A095663