27101

Appears in sequences

• Not integral, withdrawn.at n=9A002692
• Rhombi (in 3 different orientations) in a rhombus with 60-degree acute angles.at n=40A052153
• a(n) = 15*n*(n+1) + 11.at n=42A132208
• Composite numbers generated by the Euler polynomial x^2 + x + 41.at n=34A145292
• Number of (n+1) X 2 0..3 arrays with every 2 X 2 subblock commuting with each of its horizontal and vertical 2 X 2 subblock neighbors.at n=7A186474
• Number of (n+1)X9 0..3 arrays with every 2X2 subblock commuting with each of its horizontal and vertical 2X2 subblock neighbors.at n=0A186481
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock commuting with each of its horizontal and vertical 2X2 subblock neighbors.at n=28A186482
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock commuting with each of its horizontal and vertical 2X2 subblock neighbors.at n=35A186482
• a(n) = 25*n^2 + 15*n + 1021.at n=32A214732
• Semiprimes generated by the Euler polynomial x^2 + x + 41.at n=34A228183
• a(n) = Fibonacci(p) mod p^2, where p = prime(n).at n=57A236395
• Numbers k such that (2*10^k - 113)/3 is prime.at n=19A291922
• Setwise difference A340150 \ A340076.at n=48A340151