150415

Appears in sequences

• Rhombic dodecahedral numbers: a(n) = n^4 - (n - 1)^4.at n=33A005917
• Sum of the elements in any transversal of a prime(n) X prime(n) array containing the numbers from 1 to prime(n)^2 in standard order.at n=18A066886
• Number of permutations of length n which avoid the patterns 2431, 4123, 4231.at n=10A116819