3487832977
domain: N
Appears in sequences
- a(n) = 2^n + 3^n.at n=20A007689
- Centered cube numbers: a(n) = (n+1)^20 + n^20.at n=2A036098
- a(n) = 4^n + 9^n.at n=10A074614
- Expansion of (1 - 3*x + x^2)/((1-2*x)*(1-3*x)).at n=21A085281
- G.f.: (2-x)/((1+2x)(1-3x)); e.g.f.: exp(3x)+exp(-2x); a(n)=3^n+(-2)^n.at n=20A087451
- Integers nearest to (2^((n-3)/2) + 3^((n-3)/2)).at n=43A229194