43813

Appears in sequences

• Sum of the prime factors of k equals half the sum of the prime factors of k + 1.at n=21A074213
• Number of partitions p = [x(1), ..., x(k)], where x(1) >= x(2) >= ... >= x(k), of n such that max(x(i) - x(i-1)) is a part of p.at n=47A241735
• Number of nX4 0..1 arrays with each 1 horizontally or vertically adjacent to 2 or 4 1s.at n=10A295201
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-2)^2, where a(0) = 1, a(1) = 3, b(0) = 2, and (a(n)) and (b(n)) are increasing complementary sequences.at n=16A296258