117632

Appears in sequences

• Expansion of (theta_3(q) / theta_4(q) )^4 in powers of q; also of 1 / (1 - lambda(z)).at n=7A014972
• Denominators of continued fraction convergents to sqrt(871).at n=15A042683
• a(n) = Sum_{d|n} binomial(n,d).at n=20A056045
• a(n) = Sum_{d|n and gcd(d, n/d)=1} binomial(n,d).at n=20A056190
• Expansion of phi(q^4) / phi(q) in powers of q where phi() is a Ramanujan theta function.at n=28A112128
• Expansion of elliptic modular function lambda in powers of the nome q.at n=6A115977
• Expansion of (phi(q^2) / phi(-q))^2 in powers of q where phi() is a Ramanujan theta function.at n=14A131126
• Expansion of -lambda(t + 1) in powers of the nome q = exp(Pi i t).at n=6A132136
• Expansion of phi(q^4) / phi(-q) in powers of q where phi() is a Ramanujan theta function.at n=28A208933
• Expansion of (phi(q^2) / phi(q))^2 in powers of q where phi() is a Ramanujan theta function.at n=14A210066
• Expansion of q * phi(q) * psi(q^8) / (phi(-q) * phi(q^4)) in powers of q where phi(), psi() are Ramanujan theta functions.at n=27A215348
• Number of n X 2 0..2 arrays with no element equal to the same number of vertical neighbors as horizontal neighbors, with new values 0..2 introduced in row major order.at n=10A241133
• Number of double palindrome structures of length n using a maximum of three different symbols.at n=18A328692
• G.f. satisfies A(x) = (1 + x/A(x))/(1 - x).at n=11A366363