30294
domain: N
Appears in sequences
- 3rd-order Patalan numbers (generalization of Catalan numbers).at n=7A025748
- A convolution triangle of numbers obtained from A025748.at n=21A048966
- GCD of n! and the reverse of n!.at n=23A071678
- G.f. A(x) satisfies A057083(x*A(x)) = A(x) and so equals the ratio of the g.f.s of any two adjacent diagonals of triangle A097186.at n=6A097188
- Minimal covering numbers.at n=22A160559
- Numbers k such that A(k+1) = A(k) + 1, where A() = A005101() are the abundant numbers.at n=36A169822
- Places n such that the two remainders A187680(n) and A191906(n) are both zero.at n=19A192853
- Number of nX1 0..2 arrays with every row and column least squares fitting to a nonnegative slope straight line, with a single point array taken as having zero slope.at n=9A223044
- Number of ways to write highly composite numbers (A002182(n)) as the difference of two primes, both <= 2*A002182(n).at n=38A228945
- Number of vertices in a polygon whose boundary consists of n+2 equally spaced points around a semicircle and n+2 equally spaced points along the diameter (a total of 2n+2 points). See Comments for precise definition.at n=16A334458
- Number of edges in regular n-gon after 2 generations of mitosis.at n=14A349968
- G.f. A(x) satisfies A(x) = 1 / ((1 + x) * (1 - x * A(x^3))).at n=47A367693
- Number of integer partitions of n with parts colored by {0, 1, 2} such that the sum of colors is congruent to 0 (mod 3).at n=17A389343
- Number of integer partitions of n with parts colored by {0, 1, 2} such that the sum of colors is congruent to 1 (mod 3).at n=17A390208