139201

Properties

Appears in sequences

• Primes with 21 as smallest positive primitive root.at n=17A061333
• Primes p such that q-p = 40, where q is the next prime after p.at n=38A126721
• Number of (n+1) X (1+1) 0..2 arrays with the upper median plus the lower median of every 2 X 2 subblock equal.at n=6A236739
• Number of (n+1)X(7+1) 0..2 arrays with the upper median plus the lower median of every 2X2 subblock equal.at n=0A236745
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the upper median plus the lower median of every 2X2 subblock equal.at n=21A236746
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the upper median plus the lower median of every 2X2 subblock equal.at n=27A236746
• Number of nX4 0..1 arrays with every element equal to 0 or 1 horizontally or antidiagonally adjacent elements, with upper left element zero.at n=16A301786
• Prime numbersat n=12940