37720

Appears in sequences

• 10000n+1, 10000n+3, 10000n+7, 10000n+9 are all primes.at n=15A064963
• a(n) = ( (5 + sqrt(7))^n - (5 - sqrt(7))^n )/(2*sqrt(7)).at n=5A154246
• Count of interior bounded regions in a regular 2n-sided polygon dissected by all diagonals parallel to sides.at n=20A165217
• Number of (n+1)X(1+1) 0..2 arrays with each row and column prime, read as a base 3 number with top and left being the most significant digits.at n=9A262117
• Numbers k such that (26*10^k - 173)/3 is prime.at n=21A293910
• a(n) = n*(n^3 + 2*n^2 - 5*n + 10)/8.at n=23A294259
• Number of partitions of n with up to seven distinct kinds of 1.at n=27A320694