56927

Appears in sequences

• Numbers k such that sigma(sigma(k)) == phi(k) (mod sigma(k)).at n=19A067204
• Number of n X 2 arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 n X 2 array.at n=28A220147
• Number of arrays of median of three adjacent elements of some length 6 0..n array, with no adjacent equal elements in the latter.at n=15A229014