25344

Appears in sequences

• cos(arctan(x)+tan(x))=1-4/2!*x^2+16/4!*x^4-544/6!*x^6+25344/8!*x^8...at n=4A013001
• exp(arctanh(x)+tanh(x)) = 1+2*x+4/2!*x^2+8/3!*x^3+16/4!*x^4+72/5!*x^5...at n=8A013184
• Expansion of (theta_3(z^4)^3 + theta_2(z^4)^3)^4.at n=14A028697
• Composite numbers divisible by the palindromic sum of their palindromic prime factors (counted with multiplicity).at n=22A046366
• One half of sixth unsigned column of Lanczos' triangle A053125.at n=3A054330
• a(n) = 2^(n-7)*binomial(n,7). Number of 7D hypercubes in an n-dimensional hypercube.at n=5A054851
• Card-matching numbers (Dinner-Diner matching numbers).at n=39A059060
• a(n) = phi(n^3 + n^2 + n + 1).at n=34A066792
• 11-almost primes (generalization of semiprimes).at n=26A069272
• Numbers whose product of exponents is equal to the sum of prime factors.at n=29A071175
• Product{<n/k>: k=1,2,...,n}, where <x> denotes the integer second nearest to x. (For x=(2h+1)/2, <x> is defined to be h, not h+1; if x is an integer, then <x> is defined to be x+1.)at n=9A075998
• a(n) = 2^(n-4)*(n+2)*(n+3)*(n+4)*(n+5)*(n+6)/15.at n=6A080952
• a(n) = 4^n*(n^3 - 3*n^2 + 2*n + 384)/384.at n=7A081915
• Binomial transform of heptagonal numbers A000566.at n=9A084899
• a(n) = 4^(n-2)*n*(5*n+3)/2.at n=6A084901
• Number of divisors of multiply-perfect numbers.at n=41A088843
• Generalized Stirling2 array (6,2).at n=12A091746
• Number of arrangements of n non-attacking bishops on an n X n board such that every square of the board is controlled by at least one bishop.at n=7A122749
• Number of ternary Lyndon words with exactly five 1's.at n=7A124723
• Inverse of number triangle A128412.at n=22A128413