19123

Appears in sequences

• a(n) = (2*n^3 + 5*n^2 - 11*n)/2.at n=25A162257
• Least number having exactly two odd prime factors that differ by 2*n^2.at n=26A190052
• G.f. A(x) satisfies A(x/(1-x))=x*(1+A(x))/(1-A(x)-A(x)^2).at n=14A201779
• Triangle T(n,k) giving the number of terms of A219666 which have n digits (A084558) in their factorial base expansion and whose most significant digit (A099563) in that base is k.at n=37A230420
• Triangle A230420 transposed.at n=43A230421
• a(n) is the largest k such that the sum of k consecutive reciprocals 1/p_n + ... + 1/p_(n+k-1) does not exceed 1 (where p_n = n-th prime).at n=22A327600
• Positions of new record minima A372935 in A071961.at n=16A372936