54740

Appears in sequences

• Sum of the first n even squares: a(n) = 2*n*(n+1)*(2*n+1)/3.at n=34A002492
• Binomial coefficient C(5n,n-11).at n=3A004353
• Binomial coefficient C(7n,n-7).at n=3A004375
• Binomial coefficients C(n,67).at n=3A017731
• Binomial coefficients C(70,n).at n=3A017786
• Expansion of 1/((1-x)^5 - x^5).at n=14A049016
• Closed walks of length n along the edges of a pentagon based at a vertex.at n=18A054877
• Sum of diagonal elements and those below it for a square matrix of integers, starting with 1.at n=19A066804
• Number of closed walks of length 2n at a vertex of the cyclic graph on 10 nodes C_10.at n=9A095929
• Structured disdyakis dodecahedral numbers (vertex structure 5).at n=19A100163
• a(n) = Sum_{k >= 0} binomial(n,5*k+4).at n=18A139761
• Tetrahedral numbers n*(n+1)*(n+2)/6 with n, n+1 and n+2 nonprime.at n=20A152622
• Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 2 ones in any 2 X 2 X 2 subtriangle.at n=14A153910
• a(n) = Sum_{k == floor(n/2) (mod 5)} C(n,k).at n=18A173125
• Molecular topological indices of the sun graphs.at n=22A192845
• Triangular array read by rows. T(n,k) is the number of partial functions on {1,2,...,n} that are endofunctions with no cycles of length > 1 that have exactly k components.at n=31A203092
• a(n) = binomial(3*n + 1,3).at n=22A228887
• Greedy-summable tetrahedral numbers.at n=40A242291
• a(n) = (p+1)*(p+2)*(p+3)/6 where p is the n-th prime.at n=18A271512
• a(n) = (5*n + 3)*(5*n + 4)*(5*n + 5)/6.at n=13A300522