41531

Appears in sequences

• a(n) = Sum_{k=0..floor((n+1)/2)} (k+1) * A008315(n, k).at n=14A027305
• Numbers k such that k divides the (left) concatenation of all numbers <= k written in base 15 (most significant digit on right and removing all least significant zeros before concatenation).at n=17A029532
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 25 ones.at n=25A031793
• Numbers k such that A003422(k+1)/2 is prime.at n=19A124375
• Row sums of A050158.at n=7A296770
• G.f. A(x) satisfies A(x) = 1 + x^5*A(x)^5 / (1 - x*A(x)).at n=25A365702