19050

Appears in sequences

• a(n) = n*(n^2 + 12*n - 25)/6.at n=45A026057
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 46.at n=5A031724
• Numbers k such that 37*2^k+1 is prime.at n=33A032368
• Numbers k for which 2^k + 3^k + 4^k is prime.at n=11A081507
• Numbers k such that k*((2^61-1)^2) - 1 and k*((2^61-1)^2) + 1 are twin primes.at n=7A099229
• Numbers m such that m + sigma(m) is a repdigit.at n=18A116017
• a(n) = 36*n^2 + 6.at n=22A158479
• a(n) = n + floor( n^2/2 + n^3/3 ).at n=38A236773
• Total volume of the family of rectangular prisms with dimensions p, q and p + q where p divides q, n = p + q and p < q.at n=29A303481
• Number of distinct non-subset-sums of integer partitions of n.at n=30A365918