29568

Appears in sequences

• Almost trivalent maps.at n=5A002012
• Triangle T(n,k) of arctangent numbers: expansion of arctan(x)^n/n!.at n=33A008309
• a(n) = n*(n + 1)*(3*n + 1).at n=21A027903
• Expansion of 2 - (1 - 16*x)^(1/4), related to quartic factorial numbers A034176.at n=5A034256
• Triangle T(n,k) of arctangent numbers: expansion of arctan(x)^n/n!.at n=61A049218
• a(n) = a(n-1) + a(m) for n >= 4, where m = 2*n - 2 - 2^(p+1) and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = a(2) = 1 and a(3) = 3.at n=36A050035
• a(n) = 2^(n-5)*binomial(n,5). Number of 5D hypercubes in an n-dimensional hypercube.at n=6A054849
• Jacobi form of weight 12 and index 1 for Niemeier lattice of type A_17*E_7 or D_10*E_7^2.at n=7A055752
• a(n) is the number of divisors of n!*(n! + 1)/2.at n=15A063101
• Numbers k such that phi(prime(k)-1) == 0 (mod k).at n=10A067733
• a(n) = 2^(n-1)*binomial(2*n-3, n-1).at n=6A069723
• Numbers k not in A065036 but such that tau(k) = omega(k)^3.at n=28A074853
• Seventh column of triangle A075503.at n=2A076007
• A transform of binomial(n,6).at n=6A082140
• Duplicate of A069723.at n=6A082142
• Triangle read by rows: T(n,m) = 4^m * (2*n+1)! / ( (2*n - 2*m + 1)! * (2*m)! ), row n has n+1 terms.at n=18A085840
• Number of arrangements of 1..n^2 in n X n array with exactly one local maximum.at n=2A087518
• Array T(n,k) (n >= 1, k >= 1) read by antidiagonals, giving number of ways of arranging the numbers 1 ... mn into an m X n array so there is exactly one local maximum.at n=12A087783
• Number of ways of arranging the numbers 1 ... 3n into a 3 X n array so there is exactly one local maximum.at n=2A087924
• Numbers that can be expressed as the difference of the squares of primes in exactly six distinct ways.at n=18A092002