67210

Appears in sequences

• Decagonal numbers divisible by 10.at n=26A117797
• Numbers k such that k+1, k+3, k+7 and k+9 are all primes.at n=28A125855
• a(n) = n*(n + 7)*(n + 14)*(n + 21)/24.at n=26A264447
• Number of ways to write n as an ordered sum of 10 primes (counting 1 as a prime).at n=12A341989
• Product of Lucas and Catalan numbers: a(n) = A000032(n)*A000108(n).at n=8A371986