26801

Properties

Appears in sequences

• Number of partitions of n with equal number of parts congruent to each of 0 and 1 (mod 3).at n=54A035534
• Primes of the form (5+ a triangular number A000217).at n=26A159049
• Primes of the form x^2 + 5*y^2, where x and y=x+1 are consecutive natural numbers.at n=19A176608
• Number of n X 2 arrays of the minimum value of corresponding elements and their horizontal, vertical or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 n X 2 array.at n=24A219810
• a(n) = Sum_{j=1..n*(n-1)} (n*j mod (n+j)).at n=16A309341
• The difference between 10^n and the lesser of the twin primes immediately before.at n=38A327133
• Non-Brauer numbers.at n=15A349044
• a(n) is the first prime p such that the concatenations of n consecutive primes, starting with p, in both forward and backward directions, are prime.at n=12A384958
• Prime numbersat n=2940