-369

Appears in sequences

• Coefficients of the 3rd-order mock theta function f(q).at n=44A000025
• Coefficient of q^(2n) in the series expansion of Ramanujan's mock theta function f(q).at n=22A000039
• Shifts left when Moebius transformation applied twice.at n=33A007551
• Expansion of (1-x-x^N)/((1-x)(1-x^2)(1-x^3)...(1-x^N)) for N = 8.at n=31A060027
• Expansion of (1-x)/(1-x-x^2+2*x^3).at n=27A078011
• Matrix inverse of A107719.at n=32A107727
• ( (Theta series of E_8)^(1/8) - (theta series of Leech lattice)^(1/24) ) / 30.at n=2A108772
• Expansion of 1/(sqrt(1+4x^2)+x(1-x)).at n=13A111964
• FP4 polynomials related to the o.g.f.s of the columns of the A156925 matrix.at n=9A156933
• Values of n such that L(1) and N(1) are both prime, where L(k) = (n^2+n+1)*2^(2*k) + (2*n+1)*2^k + 1, N(k) = (n^2+n+1)*2^k + n.at n=32A226921
• Expansion of f(-q) in powers of q where f() is a 3rd order mock theta function.at n=44A260460
• Alternating sum of heptagonal numbers.at n=17A266085
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 225", based on the 5-celled von Neumann neighborhood.at n=15A270945
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 229", based on the 5-celled von Neumann neighborhood.at n=11A270949
• a(0)=0; thereafter a(n) = a(n-1)+n if the (n-1)st digit of the sequence is even, otherwise a(n) = a(n-1)-n.at n=50A309216
• a(1) = 1; a(n) = Sum_{k=2..n} (-1)^k * k * a(floor(n/k)).at n=47A359479
• a(1) = 1; a(n) = Sum_{k=2..n} (-1)^k * k * a(floor(n/k)).at n=48A359479
• a(1) = 1; a(n) = Sum_{k=2..n} (-1)^k * k * a(floor(n/k)).at n=49A359479