41124

Appears in sequences

• a(n) = (2*n-1)*(n^2 -n +2)/2.at n=34A063488
• a(n) = Sum_{k=0..floor(n/2)} k! * (n - 2*k)!.at n=8A309619
• Unitary Ruth-Aaron numbers: numbers k such that A008475(k) = A008475(k+1).at n=24A331000
• Composite numbers k such that (k-1) divides (A018804(k)-1).at n=0A344456
• Numbers k such that A162296(k) = A162296(k+1) > 0.at n=5A362400
• Numbers k such that 8191 * 2^k + 1 is prime.at n=8A377248