18574
domain: N
Appears in sequences
- Numbers that are the sum of 5 positive 7th powers.at n=26A003372
- a(n+3) = 2*a(n+2) + 3*a(n+1) - a(n); with a(1) = 1, a(2) = 4, a(3) = 10.at n=9A095127
- Antidiagonal sums of triangle A118032, where the row sums of the matrix square of A118032 forms a bisection of this sequence.at n=17A118037
- Row sums of triangle A118045; also equals a bisection of A118037, which is the antidiagonal sums of triangle A118032.at n=8A118049
- Numbers n such that f(n), f(n+1) and f(n+2) are prime, f(m)=72*m^2+7.at n=20A121089
- Expansion of eta(q^4) * eta(q^28) / (eta(q) * eta(q^7)) in powers of q.at n=40A123648
- Number of nX3 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.at n=10A239853
- Where zeros occur in A065806.at n=15A241671
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 105", based on the 5-celled von Neumann neighborhood.at n=30A270162
- Denominators of r-Egyptian fraction expansion for sqrt(3) - 1, where r(k) = 1/k!.at n=8A270520
- a(n) = number of n-digit binary numbers in which the first k and last k digits have a Hamming distance of 1 or less, for all k from 1 to n.at n=47A288793
- G.f.: Sum_{n>=0} (1+x + x^n)^n * x^n.at n=21A326269
- Number of positive integers with n digits in which adjacent digits differ by at most 2.at n=5A383197