-1980

Appears in sequences

• a(n) = 6^n/n! * Product_{k=0..n-1} (6*k - 1).at n=3A004996
• McKay-Thompson series of class 5a for Monster.at n=17A007253
• Low-temperature series for magnetization in zero-field 3-state Potts model on cubic lattice.at n=18A007270
• McKay-Thompson series of class 20a for Monster.at n=15A058556
• Triangle of signed numbers used for the computation of the column sequences of triangle A090217.at n=11A090435
• Triangle of coefficients of n-th degree interpolating polynomial to sqrt(x) multiplied by 4^n.at n=25A091764
• Triangle of diagonals of symmetric Krawtchouk matrices.at n=70A099037
• Triangular table containing values of coefficients of the characteristic polynomial of a certain n x n circulant matrix, read by rows.at n=24A127412
• Convolution array for Chebyshev's S(n,x)=U(n,x/2) polynomials.at n=59A128502
• Irregular triangular array a(n,m) for third (k=3) convolution of Chebyshev's S(n,x) = U(n,x/2) polynomials, read by rows (n >=0, 0 <= m <= floor(n/2)).at n=31A128505
• Triangular sequence of coefficients of p(x,t) = t*exp(3*x*t - t^2)/(exp(t) - 1).at n=7A137784
• Table which contains in row n the mapping of the n-th block of 4 primes to 4 integers.at n=39A162156
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 121", based on the 5-celled von Neumann neighborhood.at n=25A270209
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 131", based on the 5-celled von Neumann neighborhood.at n=31A270224
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 139", based on the 5-celled von Neumann neighborhood.at n=29A270281
• Convolution of partition polynomials of A133437 related to solutions of the Burgers-Hopf equation.at n=26A276850
• Triangle read by rows: Riordan array (1/(1-9x)^(2/3), x/(9x-1)).at n=11A283151
• Expansion of determinant of 24 X 24 matrix M_{u,v} = q^(maj(u*v^-1)) where u, v in S_4 and maj = MacMahon's major index (cf. A008302).at n=8A323978
• Triangle read by rows: T(n, k) = (-1)^(k+1)*binomial(n,k)*binomial(n+k,k) (n >= k >= 0).at n=47A331430
• Expansion of g.f. A(x) = G( x*(1 + 2*x)*G(x) )^(1/2) = G( x*(1 + 3*x)*G(x)^2 )^(1/3), where G(x) is the g.f. of A370537.at n=9A370538