22630

Appears in sequences

• Numbers n such that n^2 + 1, n^2 + 3, n^2 + 7 and n^2 + 9 are all primes.at n=6A057015
• Total number of parts in all partitions of n into odd parts.at n=44A067588
• a(n) = n*(6*n^2 - 7*n + 3)/2.at n=20A071230
• Number of 0..n arrays x(0..3) of 4 elements without any interior element greater than both neighbors or less than both neighbors.at n=18A200872
• G.f.: Sum_{k>=0} x^(2^k) / (1 - x^(2^k))^4.at n=47A338046
• Products of four distinct primes between sphenic numbers (products of 3 distinct primes).at n=13A351382