50517

Appears in sequences

• Indices of primes at which the prime race 4k-1 vs. 4k+1 is tied.at n=33A038691
• a(n) = ((6*n+1)*4^n - 1)/3.at n=6A072258
• Number of arrangements of 4 numbers x(i) in -n..n with the sum of x(i)*x(i+1) equal to zero.at n=33A188359
• a(n) = n*2^(n+1) + (2^(n+3)+(-1)^n)/3.at n=11A191007
• Number of n X 3 0..4 arrays with each element equal to the number its horizontal and vertical neighbors equal to itself.at n=20A195964
• Number of compositions of n into parts with distinct multiplicities and with exactly nine parts.at n=33A321779
• Expansion of 1/(1 - x/(1 - 4*x)^(3/2)).at n=7A382514