50826

Appears in sequences

• Numbers k such that the largest prime factor of k is equal to the sum of primes dividing k+1 (with repetition).at n=31A071861
• a(n) = number of components of the graph P(n,2) (defined in Comments).at n=22A145667
• Number of n-celled solid polyominoes (or free polycubes, allowing mirror-image identification) with chessboard coloring.at n=8A234599
• Number of partitions of n such that at least half the parts are identical.at n=47A237269