-174

Appears in sequences

• (2*n)!-Sum ((-1)^(i+1)*binomial(n,i)*2^i*(2*i-1)!,i=1..n).at n=3A006563
• a(n) = a(n-1) - a(n-3) with a(1)=0, a(2)=0, a(3)=1.at n=50A050935
• Coefficients of the '6th-order' mock theta function psi(q).at n=42A053269
• Sum_{d=1..n} phi(d)*mu(d).at n=53A054585
• Sum_{d=1..n} phi(d)*mu(d).at n=54A054585
• Matrix inverse of triangle A055363(n+2,k).at n=50A055370
• a(n) = A023194 - A062700(n). Negative values of A071166(m) = m-A006530(A000203(m)) differences. In these cases m is square number from A023194.at n=19A071167
• Expansion of 1/(1-x+2*x^2-x^3) in powers of x.at n=24A077954
• Expansion of 1/(1+x+2*x^2+x^3).at n=24A077979
• McKay-Thompson series of class 42C for the Monster group.at n=49A102314
• Values of y arising from representations of n >= 11 in A085514.at n=20A102775
• Coefficients of the C-Rogers-Selberg identity.at n=35A104410
• Inverse binomial transform of number triangle A105632.at n=47A105847
• Series expansion of the reciprocal of the Goellnitz-Gordon continued fraction.at n=76A111374
• f(f(n+1))-f(f(n)), where f(0)=0, and for m>0, f(m) = sigma(m) = A000203(m).at n=56A111408
• McKay-Thompson series of class 18i for the Monster group.at n=25A112157
• Expansion of x(1-3x+x^2+x^3)/(1+x)^2.at n=44A113142
• Alternating ones and twos tridiagonal matrices ( columns of 1's and twos) to give a triangular sequence: m(n,m,d)=If[ n == m, 1 + (1 - (-1)^(n + 1))/2, If[n == m - 1 || n == m + 1, 1 + (1 - (-1)^n)/2, 0]].at n=62A124036
• Table, read by rows, of coefficients of characteristic polynomials of almost prime matrices.at n=11A131175
• Alternating row sums of triangle A134141 (S1p(7)).at n=4A132165