20858
domain: N
Appears in sequences
- Numbers k such that the continued fraction for sqrt(k) has period 35.at n=37A020374
- Triangle of numbers {a(n,k), n >= 0, 0<=k<=n} defined by a(0,0)=1, a(1,0)=2, a(n,0)=A006318(n), a(n,n)=A006319(n), a(n+1,0)=a(n,0)+a(n,n), a(n,m+1)= Sum A006318(k)*a(n-k,0), k=0..m.at n=33A073150
- Convolution of Fibonacci and Jacobsthal numbers.at n=15A094687
- Triangle read by rows given by [1,1,1,1,1,1,1,1,1,1,...] DELTA [1,1,0,0,0,0,0,0,0,0,0,...] where DELTA is the operator defined in A084938.at n=40A167685
- Number of partitions of n not containing 2*(number of parts) as a part.at n=36A238488
- a(n) = prime(n)# - Sum_{k=1..n-1} prime(k)# * a(n-k), where prime()# = A002110.at n=6A333372
- a(n) = Sum_{i=1..n} (i-1)*T(i)^2, where T(i) = A000073(i) is the i-th tribonacci number.at n=8A337284