458752
domain: N
Appears in sequences
- a(n) = 7*4^n.at n=8A002042
- a(n) = 7*2^n.at n=16A005009
- Numbers of form 4^i*7^j, with i, j >= 0.at n=39A025619
- Numbers of the form 2^k or 7*2^k.at n=35A029746
- Triangle whose (i,j)-th entry is binomial(i,j)*2^(i-j)*4^j.at n=41A038210
- Triangle whose (i,j)-th entry is binomial(i,j)*2^(i-j)*4^j.at n=42A038210
- Triangle whose (i,j)-th entry is binomial(i,j)*4^(i-j)*2^j.at n=38A038232
- Triangle whose (i,j)-th entry is binomial(i,j)*4^(i-j)*2^j.at n=39A038232
- Number of ordered factorizations with 2 levels of parentheses indexed by prime signatures.at n=34A050357
- Invert transform applied three times to Pascal's triangle A007318.at n=38A055374
- a(n) = n*2^n - 2^n = 2^n*(n-1).at n=14A058922
- Numbers k such that k = 2*phi(k) + phi(phi(k)).at n=31A063920
- Triangle with columns built from certain power sequences.at n=39A067402
- Fourth column of triangle A067402.at n=5A067404
- Triangle with columns built from certain power sequences.at n=39A067425
- 17-almost primes (generalization of semiprimes).at n=5A069278
- Binary expansion is 1x100...0 where x = 0 or 1.at n=33A070875
- Let P(k,X) = 4^k*Product_{i=1..k} (X - cos(Pi*i/k)) (which is a polynomial with integer coefficients). Sequence gives maximum absolute values of coefficients of P(n,X).at n=8A075614
- 4th binomial transform of (1,3,0,0,0,0,0,.....).at n=8A081039
- 8th binomial transform of (1,1,0,0,0,0,...).at n=6A081108