39766

Appears in sequences

• Number of uh^jd's for some j>0, starting at level 0, where u=(1,1), h=(1,0), and d=(1,-1), in all peakless Motzkin paths of length n (can be easily expressed using RNA secondary structure terminology).at n=16A187260
• Expansion of f(-x^3, -x^7) * f(x^4, x^6) / psi(-x)^2 in powers of x where psi(), f(,) are Ramanujan theta functions.at n=30A259393
• Sphenic numbers that are sandwiched between products of exactly 4 distinct primes (or tetraprimes).at n=1A375908