990990

Appears in sequences

• a(n) = 14*(n+1)*binomial(n+5,8).at n=7A027813
• a(n) = 66*(n+1)*binomial(n+5,11).at n=4A027816
• a(n) = {n concatenate R(n)}*{ R(n) concatenate n}, where R(n) = digit reversal of n.at n=30A110722
• Numbers with exactly 6 distinct prime divisors {2,3,5,7,11,13}.at n=27A147573
• a(n) is the number of subsets of {1,2,...,n} with at least two elements and the difference between successive elements at least 6.at n=53A335184