18623

Appears in sequences

• Average of 4 primes where the integer Schwarzian derivative is zero.at n=19A094903
• Indices m such that A128646(m)-1 is prime, where A128646 = denominator of partial sums of 1/(p(i)-1).at n=47A137689
• Least number having exactly two odd prime factors that differ by 2*n^2.at n=28A190052
• (p^2 - 3)/2 for odd primes p.at n=42A243887
• Number of compositions (ordered partitions) of n into square parts (A000290) such that no two adjacent parts are equal (Carlitz compositions).at n=60A301503
• Expansion of (1/x) * Series_Reversion( x / ((1+x)^2 * (1+x^2*(1+x)^3)) ).at n=7A387498