198661

Appears in sequences

• a(n) is the least number k whose digit sums are 2*n-1, 2*n and 2*n+1 in bases 2*n-1, 2*n and 2*n+1 respectively.at n=20A379896
• G.f. A(x) satisfies A(x) = 1 + x*A(x)/A(-x*A(x))^3.at n=10A385015
• a(0) = 1; a(n) = a(n-1) + Sum_{k=0..n-1} (1 + k) * binomial(k+2,3) * binomial(n-1,k) * a(k) * a(n-1-k).at n=5A386511