47509

Appears in sequences

• Triangle read by rows: coefficients of polynomials p(k) = (-x + k + 1)*p(k-1), starting p(0)=1, p(1)=1-x.at n=40A123319
• Numbers k such that 10^(2*k+1) - 10^k - 1 is prime.at n=6A183187
• Table of the elementary symmetric functions a_k(1,3,4,...,n+1).at n=40A196841
• Number of nX2 0..3 arrays with rows and columns lexicographically nondecreasing and the instance counts of every value within one of each other.at n=8A201387
• k such that 10^(2*k+1)-j*10^k-1 is prime for some j = 1, 2, 4, 5, 7 or 8.at n=39A213881
• Starts of runs of 4 consecutive Gray-code Niven numbers (A344341).at n=35A344344