-164

Appears in sequences

• Discriminants of quadratic number fields Q(sqrt -n) for n squarefree.at n=26A033197
• Matrix inverse of triangle A055340(n+1,k).at n=50A055347
• 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=20A056228
• Coefficients of replicable function number 12c.at n=10A058491
• McKay-Thompson series of class 24a for Monster.at n=10A058584
• McKay-Thompson series of class 42B for Monster.at n=47A058672
• Expansion of (1-x-x^N)/((1-x)(1-x^2)(1-x^3)...(1-x^N)) for N = 4.at n=29A060023
• Years of recorded observations of Comet Halley.at n=1A072235
• Binomial transform of A073145.at n=6A073498
• Start with 1, add the next number if one gets a prime then add the next number else subtract the next...at n=23A074170
• Expansion of phi(-x) / psi(x^4) in powers of x where phi(), psi() are Ramanujan theta functions.at n=57A093085
• Triangle, read by rows, where T(n,k) = (k/n)*Sum_{d|n} A096800(d,k).at n=37A096799
• Sum_{k=1..2*n-1} J(n,k)*k where J(i,j) is the Jacobi symbol.at n=37A097540
• Sum_{k=1..2*n-1} J(4*n,k)*k, where J(i,j) is the Jacobi symbol.at n=37A097542
• Constant term in (1+x)^n mod (1+x^4).at n=9A099586
• Constant term in (1+x)^n mod (1+x^4).at n=10A099586
• Coefficient of x^2 in (1+x)^n mod 1+x^4.at n=10A099588
• Expansion of x^3 / (1 - 4*x + 6*x^2 - 4*x^3 + 2*x^4).at n=11A099589
• Years of recorded appearances of Halley's Comet (negative years are B.C.).at n=1A100748
• Matrix inverse of triangle A099602, read by rows, where row n of A099602 equals the inverse binomial transform of column n of the triangle of trinomial coefficients (A027907).at n=41A104495