102900

Appears in sequences

• Area A of the triangles such that A, the sides and one of the altitudes are four consecutive integers of an arithmetic progression d.at n=34A210645
• Number of (w,x,y,z) with all terms in {1,...,n} and w<2x and y<=3z.at n=20A212509
• Number of move operations required to sort all permutations of [n] by MTF sort.at n=7A279683
• Number of multisets of exactly ten partitions of positive integers into distinct parts with total sum of parts equal to n.at n=22A320795
• Number of monic irreducible polynomials over GF(7) with fixed nonzero trace.at n=7A373277
• Irregular triangle read by rows: T(r,c) is the product of the number of standard Young tableaux (A117506) and the number of semistandard Young tableaux (A262030) for partitions of r.at n=39A380611
• Integers k such that k = Sum k/(p_i + j), where p_i are the prime factors of k (with multiplicity). Case j = -4.at n=14A380925