54024

Appears in sequences

• Reversion of 1 / sqrt(1 - 4*x) (the o.g.f. for the central binomial coefficients A000984) as if it were an e.g.f.at n=7A066397
• Number of length n+5 0..5 arrays with some three disjoint pairs in each consecutive six terms having the same sum.at n=7A248486
• a(n) = s(n) - prime(n+1)+3, where s(n) = smallest even number x > prime(n) such that the difference x-p is composite for all primes p <= prime(n).at n=46A298736
• Triangle read by rows: T(n,m) (n >= m >= 1) = number of line segments formed by drawing the lines connecting any two of the 2*(m+n) perimeter points of an m X n grid of squares.at n=43A331454