118820

Appears in sequences

• The a(n)-th composite number is 2^n.at n=15A065891
• Duplicate of A065891.at n=15A073801
• Column 0 of triangle A118032, where column 0 of the matrix square of A118032 forms a bisection of this sequence.at n=26A118033
• Column 0 of triangle A118040, which is the matrix square of triangle A118032; also equals a bisection of A118033, which is column 0 of A118032.at n=13A118041
• Triangle interpolating the swinging factorial (A056040) restricted to odd indices with its binomial transform. Same as interpolating the beta numbers 1/beta(n,n) (A002457) with (A163869). Triangle read by rows, for n >= 0, k >= 0.at n=31A163842