-242

Appears in sequences

• a(n) = 1 - n^5.at n=3A024003
• Expansion of q^(-1/2) * (eta(q) * eta(q^2))^4 in powers of q.at n=26A030211
• McKay-Thompson series of class 84a for Monster.at n=54A058761
• Reversion of y - y^2 + y^4.at n=9A063033
• a(n) = 2^phi(n) - Sum_{j=0..n} binomial(phi(n), phi(j)).at n=29A073318
• Start with 1, add the next number if one gets a prime then add the next number else subtract the next...at n=26A074170
• Expansion of 1/(1+x^2+2*x^3).at n=19A077963
• a(n) = -a(n-1) - a(n-2) + a(n-3) - a(n-5).at n=15A089134
• Expansion of q * (f(-q, -q^12) * f(-q^3, -q^10) * f(-q^4, -q^9)) / (f(-q^2, -q^11) * f(-q^5, -q^8) * f(-q^6, -q^7)) in powers of q where f(, ) is Ramanujan's general theta function.at n=81A092876
• Coefficients of the B-Bailey Mod 9 identity.at n=67A104468
• Expansion of g.f. (1-x+x^2)/(1+x-x^3).at n=39A104771
• Expansion of -(3 - x + 2*x^2) / (1 - x^3 + x^4).at n=28A110063
• a(n) = sum( (-1)^(r+1)*(n-r)*r, r = 1..floor(n/2) ).at n=43A110422
• Sequence is {a(5,n)}, where a(m,n) is defined at sequence A111518.at n=7A111523
• The triangle K referred to in A038200, read along rows.at n=57A126713
• Expansion of chi(-q) * chi(-q^15) / (chi(-q^6) * chi(-q^10)) in powers of q where chi() is a Ramanujan theta function.at n=41A132968
• Expansion of (phi(x) * psi(-x))^4 in powers of x where phi(), psi() are Ramanujan theta functions.at n=26A134461
• This sequence needs a meaningful name.at n=82A139344
• Expansion of 1/(1 +x -2*x^2 -x^3 -x^4 -3*x^5 +2*x^6 +2*x^7 +3*x^8 +2*x^9 -3*x^10 -7*x^11 -3*x^12 -5*x^13).at n=11A143372
• FP2 polynomials related to the generating functions of the left hand columns of the A156920 triangle.at n=10A156925