32274
domain: N
Appears in sequences
- Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 101-111-010 pattern in any orientation.at n=14A146222
- Number of (5+2) X (n+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 3 5 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 3 5 6 or 7.at n=14A252389
- Numbers k such that sigma(phi(k)) - phi(k) = phi(sigma(k)), where phi(k) is the Euler totient function of k and sigma(k) is the sum of the divisors of k.at n=13A271633
- a(n) = C(n)*b(n), where C(n) is the n-th Catalan number and b(n) is the probability p_n(x<y) closest to 1/2 with x,y taken from the Catalan poset P_n.at n=9A335213
- The internal state of the Sinclair ZX81 and Spectrum random number generator.at n=25A357907
- Number of minimal edge cuts in the complete bipartite graph K_{n,n}.at n=7A379215