-703

Appears in sequences

• Matrix 10th power of inverse partition triangle A038498.at n=28A050313
• Alternating sum of squares to n.at n=36A089594
• McKay-Thompson series of class 42C for the Monster group.at n=67A102314
• a(n) = mu(n) * A000217(n).at n=36A125287
• Expansion of (sqrt(1-2x+7x^2-6x^3+5x^4)-(1-x+x^2))/(2x^2(1-x+x^2)).at n=12A178114
• a(n+3) = -a(n+2) + 2a(n+1) + a(n) with a(0)=-1, a(1)=0, a(2)=-3.at n=12A214683
• Expansion of 1 / (chi(x) * chi(x^7)) in powers of x where chi() is a Ramanujan theta function.at n=33A246762
• G.f. satisfies: A(x) = (1-x) * A(x^2)*A(x^3)*A(x^4)*...*A(x^n)*... .at n=60A321317
• a(n) = -a(n-1) - a(n-2) + 2*a(n-3) with a(0)=3, a(1)=-1, a(2)=-1.at n=13A331890
• a(n) = -n^2 + 21*n - 1.at n=38A332884
• a(1) = 1; a(n) = -(1/2) * Sum_{d|n, d > 1} d * (d + 1) * a(n/d).at n=36A334879
• Product_{n>=1} (1 + a(n)*x^n) = 1 + Sum_{n>=1} mu(n)*x^n, where mu = A008683.at n=31A353926
• Numerator generator for offsets from the quarter points of the Cantor ternary set to the center points of deleted middle thirds: 1 is in the list and if m is in the list -3m-4 and -3m+4 are in the list, which is ordered by absolute value.at n=29A355680
• Expansion of 1 / Sum_{k in Z} x^k / (1 - x^(5*k+1)).at n=26A375062