22274
domain: N
Appears in sequences
- Divide even numbers into groups with prime(n) elements and add together.at n=13A034959
- Numbers k such that (k+3, k+5, k+17, k+257, k+65537) are all primes.at n=20A063799
- Nearest integer to 1/(Sum_{k>=n} 1/k^4).at n=19A083559
- Difference between A007678(2n)/(2n) and (n-1)^2.at n=42A085611
- Triangle, read by rows, equal to the matrix cube of triangle A185620.at n=39A185628
- Number of n X n 0..5 matrices with each 2X2 subblock idempotent.at n=10A224662
- T(n,k) = number of linear arrays of n 1's, n -1's, and k 0's such that no two adjacent elements are equal.at n=47A283613