24770
domain: N
Appears in sequences
- a(n)=Sum{T(n,j): j=1,2,...,n}, array T given by A048212.at n=31A048222
- a(n) = (-1)^n * Sum_{i=0..n} binomial(n+1,i+1)*prime(i+1).at n=10A050513
- Number of triples (a, b, c) with gcd(a, b, c) = 1 and -n <= a,b,c <= n.at n=15A175549
- Triangle read by rows: Partial row sums of A181853(n,k).at n=41A181854
- Numbers n such that n^16+1 and (n+2)^16+1 are both prime.at n=32A217991
- Indices of primes in the 8th-order Fibonacci number sequence, A123526.at n=36A254412
- Number of odd parts in the partitions of n into 9 parts.at n=42A309656
- Number of abelian subgroups of the group SL(2, Z(n)), counting conjugates as distinct.at n=23A316536
- Number T(n,k) of permutations p of [n] such that |{ j : |p(j)-j| = 1 }| = k; triangle T(n,k), n >= 0, 0 <= k <= n, read by rows.at n=49A320582