168200
domain: N
Appears in sequences
- a(n) = (n^6 + 2n^5 + 2n^4 + n^3 + 2n)/2.at n=7A163279
- 1/8192 the number of (n+2)X3 0..3 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.at n=3A186547
- 1/8192 the number of (n+2)X6 0..3 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.at n=0A186550
- T(n,k)=1/8192 the number of (n+2)X(k+2) 0..3 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.at n=6A186553
- T(n,k)=1/8192 the number of (n+2)X(k+2) 0..3 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.at n=9A186553
- Antidiagonal sums of the convolution array A213833.at n=23A213834
- a(n) is the smallest number satisfying a(n)^2+1 = p(n)*q(n), p(n) < q(n) both prime, such that q(n+1)/p(n+1) < q(n)/p(n) with the initial condition q(1)/p(1) < 3/2.at n=17A261803
- Numbers m such that m^2 + 1 = p*q with p, q primes and m = (p + q)/2 - 1.at n=13A348594