24991
domain: N
Appears in sequences
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 41 ones.at n=4A031809
- Smallest denominator d such that the Sylvester expansion of n/d has n terms.at n=16A048860
- Expansion of (1-x)^(-1)/(1+2*x+x^2-x^3).at n=31A077929
- Partial sums of A007202 (crystal ball sequence for hexagonal close-packing).at n=12A186707
- Lengths of binary representations of prime Fibonacci numbers.at n=29A215367
- a(n) = (a(n-1)+1)*(a(n-3)+1)/a(n-4) for n > 3, a(0) = a(1) = a(2) = a(3) = 1.at n=12A276308
- Number of 2 X 2 matrices with all elements in {0,...,n} and prime permanent.at n=21A281090
- a(n) = (Sum_{k=1..n} k^3 * p(k) * p(n-k)) * 2/n where p = A000041.at n=9A281708
- Number of maximal irredundant sets in the n-ladder graph.at n=12A291100
- E.g.f. satisfies A(x) = exp( x/(1 - x/A(x)) ).at n=7A361090
- Centered heptagonal numbers which are semiprime.at n=31A381960