-1363
domain: Z
Appears in sequences
- Shifts left two places under BIN1 transform.at n=15A052341
- Product of Lucas numbers and inverted Lucas numbers: a(n)=A000032(n)*A075193(n).at n=7A075269
- a(n) = (7 - 4*(-2)^n)/3.at n=10A083594
- A generalized Jacobsthal sequence.at n=11A083944
- a(n) = -n^2 + 9*n + 23.at n=42A126719
- Triangle read by rows, T[n,2i-1]=2T[n-1,i],T[n,2i]=2k-1-2T[n-1,i].at n=48A138583
- a(0)=a(1)=1, a(n) = 2*a(n-1)- A010686(n), n>1.at n=11A173114
- Expansion of Product_{k>=1} (1-x^k)^((-1)^k*k^2).at n=12A307460
- a(1) = 1; a(n+1) = -Sum_{d|n} a(d)^(n/d).at n=52A307781
- a(n) = Sum_{d|n} (-1)^(d-1)*d^2.at n=31A321543