100651008
domain: N
Appears in sequences
- a(n) = 3*2^(n-1)*(2^n-1).at n=12A103897
- Admirable numbers that set a new record for largest subtracted divisor.at n=14A109745
- a(n) = 2*a(n-1) + 2*a(n-2) - 4*a(n-3) with n>2, a(0)=0, a(1)=1, a(2)=3.at n=26A135094
- Numbers n for which sigma(n)/n=k+2/3 with integer k.at n=9A160321
- Number of reduced words of length n in Coxeter group on 3 generators S_i with relations (S_i)^2 = (S_i S_j)^17 = I.at n=26A168680
- Numbers k such that A017666(k) = denominator(sigma(k)/k) = 3.at n=19A245775
- Numbers whose numerator and denominator of their abundancy index are both Fibonacci numbers.at n=35A349687