66853

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 30.at n=9A031618
• Numbers n such that the numbers of divisors of n,n+1,n+2 and n+3 are k,2k,4k,8k respectively for some k.at n=29A100364
• Number of (n+1)X(2+1) 0..2 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock equal.at n=3A236813
• Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock equal.at n=1A236815
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock equal.at n=11A236819
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock equal.at n=13A236819
• Prime numbersat n=6662