24064

Appears in sequences

• Expansion of e.g.f.: log(1+tan(tanh(x))).at n=9A009367
• arctanh(tan(tanh(x)))=x+2/3!*x^3+16/5!*x^5+496/7!*x^7+24064/9!*x^9...at n=4A012171
• Theta series of lattice Kappa_7.at n=20A015236
• Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 77.at n=35A031575
• Number of partitions of n into parts not of the form 21k, 21k+2 or 21k-2. Also number of partitions with 1 part of size 1 and differences between parts at distance 9 are greater than 1.at n=44A035980
• Expansion of e.g.f.: exp(2*x/(1-x)).at n=6A052897
• a(n) = 2^(n-2)*(n^2 - n + 4).at n=10A053730
• Smallest multiple of n with a prime signature different from all previous terms.at n=46A069875
• Binomial transform, alternating in sign, of the tribonacci numbers.at n=29A073358
• Number of plane binary trees of size n+2 and height n.at n=10A073773
• Number of partitions of n-1 boys and one girl with no couple.at n=30A120452
• A triangular sequence from the Z/nZ matrix addition tables as in sequence A095897 as coefficients of characteristic polynomials: M(n,m)=Mod[n + m, d] for n <=m<=d.at n=40A138064
• Triangle read by rows: characteristic polynomials of Z/nZ addition tables considered as matrices.at n=41A140059
• Ulam's spiral (ESE spoke).at n=39A143855
• 8 times octagonal numbers: 8*n*(3*n-2).at n=32A153808
• a(n) = 2^(floor(n/2))+2^(floor(n/2)-1)-2^(floor((n-1)/3)).at n=26A170831
• a(n) = 2^(floor(n/2))+2^(floor(n/2)-1)-2^(floor((n-1)/3)).at n=27A170831
• a(n) = 94*n^2.at n=16A174337
• Number of ways to place 2 nonattacking amazons (superqueens) on an n X n toroidal board.at n=15A178972
• Numbers of the form p^9*q where p and q are distinct primes.at n=13A179692