250031

Properties

Appears in sequences

• Primes p such that the differences between the 5 consecutive primes starting with p are (6,6,6,2).at n=11A078968
• Irregular primes the indices of whose indices are irregular primes of order two.at n=23A090887
• Number of n X n 0..3 arrays with values 0..3 introduced in row major order and no element equal to any horizontal or vertical neighbor.at n=3A198709
• Number of n X 4 0..3 arrays with values 0..3 introduced in row major order and no element equal to any horizontal or vertical neighbor.at n=3A198711
• T(n,k)=Number of nXk 0..3 arrays with values 0..3 introduced in row major order and no element equal to any horizontal or vertical neighbor.at n=24A198715
• Numbers n such that there are a, b with abs(sigma(a) - sigma(b)) = sigma(n) - n and a U b = n, where U is decimal concatenation.at n=36A239563
• Prime numbersat n=22048