26904

Appears in sequences

• Pisot sequence E(5,17), a(n) = floor(a(n-1)^2 / a(n-2) + 1/2).at n=7A010914
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 41.at n=3A031719
• McKay-Thompson series of class 36A for Monster.at n=48A058644
• Numbers n such that 3*10^n+7 is prime.at n=14A100501
• Triangle of numbers, called Y(1,2), related to generalized Catalan numbers A062992(n) = C(2;n+1) = A064062(n+1).at n=32A115195
• McKay-Thompson series of class 18C for the Monster group with a(0) = -3.at n=48A123676
• a(n) = (prime(n))^2 - (nonprime(n))^2.at n=39A161757
• Number of parallelograms on an n X n grid.at n=8A189416
• McKay-Thompson series of class 36A for the Monster group with a(0) = 2.at n=48A227585
• Numbers k such that k^4096 + (k+1)^4096 is prime.at n=13A274236
• Number of connected dominating sets in the n-ladder graph.at n=10A291706
• Row sums of positive (or negated negative) entries in triangle A293107.at n=3A293124
• Number of free pure achiral multifunctions with one atom and n positions.at n=17A317883
• Number T(n,k) of colored integer partitions of n using all colors of a k-set such that each block of part i with multiplicity j has a pattern of i*j distinct colors in increasing order; triangle T(n,k), n>=0, A185283(n)<=k<=n, read by rows.at n=30A326616