24685

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 99.at n=20A020438
• Sums of p-th to the q-th prime where p and q are twin primes.at n=36A114379
• Number of strings of numbers x(i=1..5) in 0..n with sum i*x(i) equal to n*5.at n=20A184705
• Centered 44-gonal numbers.at n=33A195318
• Number of pairs of functions (f,g) on a set of n elements into itself satisfying f(x) = g(f(g(x))).at n=5A239753
• T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 5 6 or 7.at n=37A252679
• Number of (2+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 5 6 or 7.at n=7A252681
• Irregular triangle: T(n,k) is the number of permutations in S_n that have exactly k occurrences of the pattern 4213. 0 <= k <= A342646(n).at n=62A342840