61387

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 35 ones.at n=27A031803
• G.f. satisfies: A(x) = (1+x) - x*(4+x)*A(x) + x*(3+2*x)*A(x)^2.at n=11A119371
• Expansion of (1+13*x+32*x^2+13*x^3+x^4)/(1-x)^5.at n=12A160765
• Heptagonal numbers (A000566) with prime indices (A000040).at n=36A346494
• Heptagonal numbers which are products of three distinct primes.at n=32A356422