23312

Appears in sequences

• Number of partitions of 2n free of multiples of 5. All odd parts occur with multiplicity 2 or 4. the even parts occur at most twice.at n=38A103257
• Admirable numbers n such that the subtracted divisor is > sqrt(n).at n=33A109321
• Total number of parts smaller than the largest part, in all partitions of n.at n=26A116686
• a(n) = prime(prime(n*n) - n*n) - n*n where prime(n) is the n-th prime.at n=20A141127
• Numbers d*p where d is a perfect number and p<d a prime not dividing d.at n=20A165772
• (Signless) coefficient of x^k in the admittance polynomial of the connected antiregular graph A_n.at n=39A188286
• Table of the elementary symmetric functions a_k(1,2,3,5,6...n+1) (missing 4).at n=33A196843
• E.g.f. satisfies A(x) = 1/(1 - log(1 + x*A(x))).at n=6A198860
• Numbers k such that 7*R_(k+2) - 2*10^k is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=15A257031
• Expansion of Product_{k>=1} 1/(1 - x^k)^(sigma_3(k)).at n=8A288391
• Least multiple of n that contains only the distinct digits of n and n+1, with each of those digits appearing at least once.at n=30A328326