60377

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 16.at n=31A031604
• Composite numbers k that divide Fibonacci(k+1).at n=22A069107
• Odd Fibonacci pseudoprimes: odd composite numbers k such that either (1) k divides Fibonacci(k-1) if k == +-1 (mod 5) or (2) k divides Fibonacci(k+1) if k == +-2 (mod 5).at n=32A081264
• Numbers k that divide Fibonacci(k+1) but do not divide Fibonacci(k) + 1.at n=20A094412
• Semiprimes k that divide Fibonacci(k+1).at n=15A177745
• Composite numbers k that divide both Fibonacci(k+1) and Fibonacci(2k+1)-1.at n=21A182504
• Numbers of the form p*q, p and q prime with q=2*p+3.at n=20A226754
• Numbers m such that abs(K(m+1) - K(m)) = 2, and both m and m+1 are squarefree (A005117), where K(m) = A002034(m) is the Kempner function.at n=20A346212
• Number of solutions to x^2 + y^2 + z^2 + w^2 <= n^2, where x, y, z, w are positive odd integers.at n=42A349611