18446

Appears in sequences

• Multiplicity of highest weight (or singular) vectors associated with character chi_101 of Monster module.at n=39A034489
• Numerators of continued fraction convergents to sqrt(208).at n=6A041386
• Smallest k such that k^2-1 is a squarefree number with n prime divisors. a(n) = A088027(n)^(1/2).at n=7A088028
• a(n) is the least number m sandwiched between m-1 and m+1, both with special properties as follows: both are squarefree; both have n distinct prime factors.at n=3A088077
• Row sums of triangle A141155.at n=17A141156
• Numbers m such that A006218(m) is a perfect square.at n=38A175345
• Partial sums of A079062.at n=36A177455
• y-values in the solution to 13*x^2 - 12 = y^2.at n=7A199405
• Number of n X 5 0..1 arrays with rows and columns lexicographically nondecreasing read forwards, and nonincreasing read backwards.at n=9A201372
• Partial sums of 3-almost primes which are again 3-almost primes, i.e., have exactly 3 not necessarily distinct prime factors.at n=26A217018
• a(n) is the number of digits in the decimal representation of the smallest power of n that contains nine consecutive identical digits.at n=15A217184
• Expansion of x*log'(C(C(x)-1)-1), C(x) = (1-sqrt(1-4*x))/(2*x).at n=6A243585
• Expansion of e.g.f. (2-exp(-x))*exp(x)/(x-1)^2.at n=6A306495
• Positions of records in A351089.at n=21A349908
• Sphenic numbers that are sandwiched between products of exactly 4 distinct primes (or tetraprimes).at n=0A375908