-944

Appears in sequences

• Magnetization series for diamond.at n=7A002930
• Expansion of e.g.f.: exp(x)/cosh(sin(x)).at n=7A009295
• Expansion of sinh(x)*cos(tan(x)).at n=3A009620
• arctanh(arctan(tanh(x)))=x-2/3!*x^3+24/5!*x^5-944/7!*x^7+77952/9!*x^9...at n=3A012228
• arctan(arctan(arctanh(x)))=x-2/3!*x^3+32/5!*x^5-944/7!*x^7+64640/9!*x^9...at n=3A012233
• Expansion of Product_{m>=1} (1-m*q^m)^24.at n=3A022684
• A sequence related to Ramanujan's tau function.at n=15A055978
• Image of Euler totient function (A000010) under "little Hankel" transform that sends [c_0, c_1, ...] to [d_0, d_1, ...] where d_n = c_n^2 - c_{n+1}*c_{n-1}.at n=48A056228
• Expansion of (1-x)^(-1)/(1-x+2*x^2-x^3).at n=26A077875
• Expansion of 1/(1 - x^2 - x^3 + x^4).at n=55A077905
• Expansion of 1/(1 - x + x^4).at n=44A099530
• a(n) is the determinant of the 3 X 3 matrix with entries the 9 consecutive primes starting with the n-th prime.at n=38A117330
• Expansion of k/q^(1/2) in powers of q, where k is the elliptic function defined by sqrt(k) = theta_2/theta_3.at n=5A127393
• Expansion of 1+k in powers of q^(1/2) where q is Jacobi's nome and k is the elliptic modulus.at n=11A134746
• A triangular sequence based on second integer differential using columns n and rows m, in the ChebyshevT T(n,m): d20(n,m)=T(n+2,m)-2*T(n+1,m)+T(n,m); d02(n,m)=T(n,m+2)-2*T(n,m+1)+T(n,m); D2(n,m)=d20(n,m)+d02(n,m).at n=26A140877
• a(0) = -1; a(1) = 0; a(2) = 1; a(3) = -1; a(n) = a(n-1) - 3*a(n-2) + 3*a(n-3) - a(n-4).at n=16A141577
• Triangle t(n,m)=A039757(n,m)+A039757(n,n-m) read by rows.at n=15A155719
• Triangle t(n,m)=A039757(n,m)+A039757(n,n-m) read by rows.at n=20A155719
• A symmetrical triangle sequence: T(n, k) = q^k + q^(n-k) - q^n, with q=4.at n=17A176227
• A symmetrical triangle sequence: T(n, k) = q^k + q^(n-k) - q^n, with q=4.at n=18A176227