69560

Appears in sequences

• Expansion of e.g.f. tanh(exp(x)*x).at n=8A009768
• Areas of a sequence of right-angled figures described below.at n=28A058195
• The number of permutations p of {1,...,n} such that |p(i)-p(i+1)| is in {1,2,3} for all i from 1 to n-1.at n=13A174700
• a(n) = A008412(n-1) + A008412(n-2) for n>1, a(0)=0, a(1)=1.at n=25A287324
• Number of compositions of n whose standard factorization into Lyndon words has all strict compositions as factors.at n=21A299023
• Number of ways to write n as an ordered sum of eight positive Fibonacci numbers (with a single type of 1).at n=30A357716