39146836
domain: N
Appears in sequences
- a(n) = (7*2^n - 4(-1)^n)/3.at n=24A083595
- a(n) = (7*4^n - 4)/3.at n=12A083597
- Expansion of (1+3x)/((1-x)(1-4x^2)).at n=24A097164
- a(1)=1, a(n) = a(n-1) + (p-1)*p^(n/2-1) if n is even, else a(n) = a(n-1) + p^((n-1)/2), where p=4.at n=24A133628
- Binomial transform of A169609.at n=24A168673
- a(n) = (3*2^(n+1) - 8 - (-2)^n)/6.at n=24A176961
- Lexicographically earliest sequence such that the sequence and its first and second differences share no terms, and the 3rd differences are equal to the original sequence.at n=24A202349
- Expansion of (1+2*x+3*x^2-x^3)/((1-x)*(1+x)*(1-2*x)*(1+2*x)).at n=24A221049