25590

Appears in sequences

• a(n) = prime(n)*prime(n-1) - 1.at n=37A023515
• Solution to the Dancing School Problem with 4 girls and n+4 boys: f(4,n).at n=13A079909
• Sum_{k=2..n} min(k,n-k)*phi(k)*(n-k).at n=30A092274
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 1), (1, -1, -1), (1, 0, 0), (1, 1, 0)}.at n=8A150333
• a(n) = 256*n^2 - n.at n=9A158010
• a(n) = 1024*n^2 - 2*n.at n=4A158420
• a(n) = 100*n^2 - 10.at n=15A158490
• Number of functions on a finite set that are not obtainable by any composition power (excluding identity as power).at n=5A163947
• Number of triangular number parts in all partitions of n.at n=29A263235
• Expansion of 1/(1 - Sum_{k>=1} x^prime(k)/(1 - x^prime(k))).at n=23A300671