74046

Appears in sequences

• Expansion of e.g.f. 6*exp(x)/(1-x)^4.at n=5A001341
• a(n) = Sum_{k=0..5} (n+k)! * C(5,k).at n=4A001347
• a(n) = (4*n+1)*(4*n+2)*(4*n+3).at n=10A001505
• a(n) = (5*n + 1)*(5*n + 2)*(5*n + 3).at n=8A001509
• a(n) = lcm(n,n+1,n+2).at n=40A033931
• a(n) = (2n+1)*(2n+2)*(2n+3).at n=20A069072
• Binomial triangle based on factorials.at n=41A076571
• a(n) = rad(n(n+1)(n+2)), where rad(m) is the largest squarefree number dividing m (see A007947).at n=40A078637
• Squarefree numbers which are products of three consecutive numbers. I.e., squarefree numbers of the form k^3 - k.at n=7A084694
• a(n) = (3*n-1) * 3*n * (3*n+1).at n=13A097321
• Numbers n such that F(2*n - 1) is prime, where F(m) is a Fibonacci number.at n=34A117595
• Number of benzenoids with 21 hexagons with C_(2v) symmetry containing n carbon atoms.at n=24A121983
• p*(p+1)*(p+2) where (p,p+2) are twin primes.at n=5A126248
• Product of the n-th run of squarefree numbers.at n=11A136742
• Squarefree positive integers of the form u*v*(u^2-v^2) for some integer u,v.at n=35A147779
• 18522n - 42.at n=3A157738
• Smallest integer areas of integer-sided triangles such that the perimeter equals n times the smallest side.at n=42A237576
• Square array A(row,col) = Sum_{k=0..row} binomial(row,k)*(1+col+k)!, read by descending antidiagonals as A(0,0), A(0,1), A(1,0), A(0,2), A(1,1), A(2,0), ...at n=33A276588
• Transpose of A276588.at n=30A276589
• Number of sequences of balls colored with at most n colors such that exactly three balls are the same color as some other ball in the sequence.at n=5A292998