30360
domain: N
Appears in sequences
- a(n) = 2*binomial(n,3).at n=46A007290
- [ n(n-1)(n-2)(n-3)/7 ].at n=23A011917
- Theta series of A*_11 lattice.at n=68A023923
- n*(n-1)*(n-2)*(n-3)*(n-4)*(2*n-1)/72.at n=12A055504
- Number of atoms in first n shells of type I hyperfullerene.at n=11A063497
- Numbers k such that d(phi(k)) = phi(d(k)), where d=A000005 and phi=A000010.at n=39A078148
- Numbers that can be expressed as the difference of the squares of primes in exactly eight distinct ways.at n=4A092004
- In the interior of a regular 2n-gon with all diagonals drawn, the number of points where exactly three diagonals intersect.at n=31A101363
- Difference between n-th prime squared and n-th perfect square.at n=40A106588
- Partial sums of A006000.at n=21A133252
- Numbers n that raised to the powers from 1 to k (with k>=1) are multiple of the sum of their digits (n raised to k+1 must not be a multiple). Case k=9.at n=28A135194
- n*A027642(n).at n=44A164869
- First bisection of A164869.at n=22A164877
- Numbers with exactly 64 divisors.at n=34A172443
- Partial sums of ceiling(Fibonacci(n)/4).at n=24A179042
- Number of permutations p of 1,2,...,n satisfying p(i+4)-p(i)<>4 for all 1<=i<=n-4.at n=8A189283
- Number of ways to place n nonattacking composite pieces rook + semi-rider[4,4] on an n X n chessboard.at n=7A189846
- Numbers with prime factorization pqrst^3.at n=15A189984
- E.g.f.: A(x) = x + sinh(A(x)^2).at n=5A215188
- E.g.f. satisfies: sin(x + A(x)) = A(x)^2.at n=5A236357