-205

Appears in sequences

• McKay-Thompson series of class 84a for Monster.at n=51A058761
• Determinant of the n X n matrix whose element (i,j) equals mu(|i-j|) where mu(k) is the moebius function for k > 0 and mu(0) = 0.at n=14A071085
• Expansion of 1/(1-x+2*x^3).at n=19A077950
• Expansion of (1+4x)/(1+4x+5x^2).at n=6A090133
• A transform of the Fibonacci numbers.at n=32A099505
• Row sums of triangle A118407.at n=18A118408
• Determinant of n X n matrix of first n^2 terms of Kolakoski sequence (A000002).at n=22A119493
• Y = X = 'i + .25(ii + jj + kk + e); Z = 'i - i' + .5(jj + kk - jk + kj) + e. See pdf-file and comment for an exact definition (this sequence gives an initial term 3); Version "les".at n=51A119954
• Identity matrices minus Steinbach matrices as characteristic polynomials to give a triangular array I[n]-An[i,j]-> P[k,x] P[k,n]->T[n,m).at n=74A122160
• Expansion of f(-q)^10*Q(q) in powers of q.at n=2A122269
• Expansion of q^(-3/8)* eta(q)^7* eta(q^4)^2/ eta(q^2)^3 in powers of q.at n=66A128713
• First differences of A138383.at n=27A137174
• a(n)=-a(n-1)+2a(n-3).at n=15A137426
• a(n)=-a(n-1)+2a(n-3).at n=20A137426
• A nonsense sequence.at n=63A152462
• a(0)=1, a(n) = n*(a(n-1) - 1) for n>0.at n=5A166554
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of max{2i+j-2,2j+i-2} (A204004).at n=21A204005
• a(n) = Im((1-I)^(1-n)*A_{n, 3}(I)) where A_{n, k}(x) are the generalized Eulerian polynomials.at n=4A225147
• G.f.: x^((k^2+k)/2)/(mul(1-x^i,i=1..k)*mul(1+x^r,r=1..oo)) with k = 3.at n=57A246582
• Numerators of a BBP-like formula for 4*Pi/sqrt(27).at n=45A260658