356589

Appears in sequences

• a(n) = 6*a(n-1) - a(n-2), n >= 2, a(0)=1, a(1)=9.at n=7A038761
• a(n) = 2*a(n-1) + a(n-2); a(0)=1, a(1)=4.at n=14A048654
• 2*a(n)^2 + 7 is a square.at n=14A077442
• Start with the sequence S(0)={1,1} and for k>0 define S(k) to be I(S(k-1)) where I denotes the operation of inserting, for i=1,2,3..., the term a(i)+a(i+1) between any two terms for which 4a(i+1)<=5a(i). The listed terms are the initial terms of the limit of this process as k goes to infinity.at n=28A082981
• a(2n) = A001542(n+1), a(2n+1) = A038761(n+1); a Pellian-related sequence.at n=13A129345
• a(n) = 2*a(n - 2) + a(n - 4) with a(0) = a(1) = 2, a(2) = 1, a(3) = 3.at n=30A266504