20447232
domain: N
Appears in sequences
- Expansion of g.f. (1+2*x)/(1-2*x)^2.at n=19A014480
- Main diagonal of the table of k-almost primes (A078840): a(n) = (n+1)-st integer that is an n-almost prime.at n=21A078841
- Inverse binomial transform of n*Pell(n).at n=39A093968
- Hankel transform of sequence (b(n)) where b(n) = Sum_{i=0..n} binomial(2*i,i).at n=20A098106
- a(n) = n*2^(floor(n/2)).at n=39A132344
- Column 1 in the matrix of A279212 (whose indexing starts at 0).at n=20A335903