38048
domain: N
Appears in sequences
- Number of positive integers <= 2^n of form 2 x^2 + 5 y^2.at n=18A000286
- a(0) = 1, a(1) = 2, for n > 1, a(n) = 4*a(n-1) - 2*a(n-2).at n=9A003480
- Molien series for A_10.at n=46A008633
- Pisot sequence P(2,7): a(0)=2, a(1)=7, thereafter a(n+1) is the nearest integer to a(n)^2/a(n-1).at n=8A020727
- Duplicate of A020727.at n=8A021000
- a(0)=1; a(1)=2; a(n) = a(n-1) + a(n-2)*(3 - (-1)^n)/2.at n=17A062113
- Binomial transform of (Pell(-n)+Pell(n))/2.at n=10A094038
- Number of partitions of n containing a clique of size 8.at n=48A183565
- Number of -3..3 arrays x(i) of n+1 elements i=1..n+1 with set{t,u,v in 0,1}((x[i+t]+x[j+u]+x[k+v])*(-1)^(t+u+v)) having three, four or five distinct values for every i,j,k<=n.at n=13A211724
- Expansion of (1+2*x-x^3)/(1-4*x^2+2*x^4).at n=17A217730