4194304
domain: N
Appears in sequences
- Powers of 4: a(n) = 4^n.at n=11A000302
- a(n) = 4*a(n-1) - 6*a(n-2) + 4*a(n-3), n > 3, with a(0)=a(1)=a(2)=0, a(3)=1.at n=24A000749
- Successive numerators of Wallis's approximation to Pi/2 (reduced).at n=14A001901
- Numerator of n!!/(n+1)!! (cf. A006882).at n=24A004730
- a(0) = 1; thereafter a(n) = denominator of (n-2)!! / (n-1)!!.at n=25A004731
- Numerator of n!!/(n+3)!!.at n=24A004732
- Denominator of n!!/(n+3)!!.at n=21A004733
- Denominator of average distance traveled by n-dimensional fly.at n=24A004735
- Numbers that are the sum of at most 2 positive 11th powers.at n=10A004908
- Numbers that are the sum of at most 3 positive 11th powers.at n=20A004909
- Numbers that are the sum of at most 4 positive 11th powers.at n=35A004910
- Smallest number with exactly n divisors.at n=22A005179
- Numbers of the form 2^i or 3^j.at n=35A006899
- Dual pairs of integrals arising from reflection coefficients.at n=23A007179
- If n mod 4 = 0 then 2^(n-1)+1 elif n mod 4 = 2 then 2^(n-1)-1 else 2^(n-1).at n=22A007679
- 11th powers: a(n) = n^11.at n=4A008455
- Expansion of e.g.f. cosh(log(1+tanh(x))).at n=24A009126
- 22nd powers: a(n) = n^22.at n=2A010810
- Coefficients of expansion of (1-x)/(1-2*x) in powers of x.at n=23A011782
- a(n) = 4^(2*n+1).at n=5A013709