74550

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 26.at n=20A031704
• Numbers n that raised to the powers from 1 to k (with k>=1) are multiple of the sum of their digits (n raised to k+1 must not be a multiple). Case k=13.at n=12A135198
• a(n) = 441*n^2 + 21.at n=13A158603
• a(n) = 169*n^2 + n.at n=20A173275
• Expansion of 1/x-4/(-sqrt(x^2-10*x+1)-x+1)-3.at n=5A239488
• Expansion of Product_{k>=1} 1 / (1 - x^k)^(6^(k-1)).at n=7A343351
• Array read by ascending antidiagonals: T(n, k) = P(n, k) where P(n, x) are the scaled Mandelbrot-Larsen polynomials defined in A347928.at n=40A348686
• a(n) = Sum_{k=0..n} 2^k * 3^(n-k) * binomial(n+1,k) * binomial(n+1,n-k).at n=5A387368