423360
domain: N
Appears in sequences
- Theta series of the coset of the E_7 lattice in its dual.at n=23A005931
- a(n) = (n-1)*(n+1)!/6.at n=7A005990
- Triangle of coefficients of Gandhi polynomials.at n=34A036970
- Differences between partial products of Gray code (A048642) and factorials (A000142).at n=9A048643
- Triangle of number of labeled rooted trees with n nodes and k leaves, n >= 1, 1 <= k <= n.at n=29A055302
- Number of labeled rooted trees with n nodes and 2 leaves.at n=5A055303
- Triangle of labeled mobiles (circular rooted trees) with n nodes and k leaves.at n=29A055349
- Triangle read by rows, T(n, k) = Sum_{i=0..n} L'(n, n-i) * binomial(i, k), for k = 0..n-1.at n=34A059374
- Sum of divisors of central binomial coefficient binomial(n, floor(n/2)).at n=19A064139
- Duplicate of A067819.at n=9A066972
- Sum of the divisors of binomial(2n,n).at n=9A067819
- Another version of triangular array in A036970: triangle T(n,k), 0<=k<=n, read by rows; given by [0, 1, 2, 4, 6, 9, 12, 16, 20, 25, 30, ...] DELTA [1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, ...] where DELTA is the operator defined in A084938.at n=43A094346
- Member r=15 of the family of Chebyshev sequences S_r(n) defined in A092184.at n=6A098300
- Magic products of 5 X 5 multiplicative magic squares.at n=6A111031
- Triangle read by rows: multiply Pascal's triangle by 1,2,6,24,120,720,... = A000142.at n=51A121757
- Lower triangular matrix T(n,j) for double application of an iterated mixed order Laguerre transform inverse to A132014. Coefficients of Laguerre polynomials (-1)^n * n! * L(n,-2-n,x).at n=48A132159
- Number of different ways n! can be represented as the difference of two squares; also, for n >= 4, half the number of positive integer divisors of n!/4.at n=27A138196
- Triangle T(n,k) with the coefficient [x^k] (n+1)!* C(n,x), in row n, column k, where C(.,.) are the Bernoulli twin number polynomials of A129378.at n=39A140333
- Elements n of A141586 with property that A100762(n) = n.at n=22A141758
- Weight distribution of [63,45,7] primitive binary BCH code.at n=10A151772