44948

Appears in sequences

• Let p = n-th irregular prime, A000928(n). Then a(n) = smallest value of m such that numerator(Bernoulli(2*m)/(2*m)) / numerator(Bernoulli(2*m)/(2*m*(2*m-1))) equals p.at n=24A092291
• a(n) = a(n-1) + floor(a(n-2)/3) with a(0)=2, a(1)=3.at n=44A182229
• Half the number of (n+1) X 2 0..3 arrays with every 2 X 2 subblock having exactly one duplicate clockwise edge difference.at n=3A209780
• Half the number of (n+1)X5 0..3 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.at n=0A209783
• T(n,k)=Half the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.at n=6A209787
• T(n,k)=Half the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.at n=9A209787
• Numbers n such that n^9+9 and n^9-9 are prime.at n=35A239505
• Number of nX7 0..1 arrays with every element equal to 0, 2, 3 or 6 king-move adjacent elements, with upper left element zero.at n=12A297985