112061

Properties

Appears in sequences

• Numbers k such that sigma(k^2+1) is a perfect square.at n=21A067465
• Primes of the form i*prime(i) + (i+1)*prime(i+1).at n=33A119487
• Number of nX3 1..3 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in nonincreasing order.at n=12A166831
• a(n) = 3^(n-1) + C(2*n, n)/2.at n=9A191993
• Prime numbersat n=10623