128153

Properties

Appears in sequences

• Triangle read by rows: T(n,k) = 2 * A011971(n,k) - 1.at n=51A136791
• Number of nonnegative integer arrays of length n+2*6-2 with new values introduced in order 0 upwards and every value appearing only in runs of at least 6.at n=33A211698
• Prime numbers such that the product of their digits equals twice the number of their digits times the sum of their digits.at n=17A343701
• Prime numbersat n=11997