78101

Properties

Appears in sequences

• Number of n X n 1..2 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order.at n=5A166775
• Number of nX6 1..2 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order.at n=5A166791
• Prime numbers ending in the prime number 101.at n=20A167626
• Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,1,1,1 for x=0,1,2,3,4.at n=6A197397
• Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,1,1,1 for x=0,1,2,3,4.at n=3A197400
• T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,3,1,1,1 for x=0,1,2,3,4.at n=48A197401
• T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,3,1,1,1 for x=0,1,2,3,4.at n=51A197401
• Primes of the form (n^2+1)/26.at n=33A208292
• Triangle read by rows: distribution of adjacent transpositions in involutions.at n=51A217876
• Strong (2,3,5)-primes (see comments).at n=37A262727
• (2,3,5,7)-primes (see comments for precise definition).at n=30A262728
• Artiads (A001583) congruent to 1 mod 50 and for which 5 is a quintic residue.at n=12A271210
• Dispersion of the odd primes: a rectangular array read by downward antidiagonals.at n=38A361876
• a(n) = Sum_{1 <= x_1, x_2, x_3, x_4, x_5 <= n} ( n/gcd(x_1, x_2, x_3, x_4, x_5, n) )^2.at n=4A373007
• Prime numbersat n=7670