262416

Appears in sequences

• a(n) = (n^4 + n^2 + 2*n)/4.at n=32A006528
• Numbers n which when converted to base 5, reversed and converted back to base 10 yield a number m such that n mod m = 0. Cases which are trivial or result in digit loss are excluded.at n=21A091079
• Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k cylinder by two distinct tiles.at n=31A368264