24000000000
domain: N
Appears in sequences
- a(1) = 2, a(n+1) > a(n) is the smallest multiple of a(n) using only even digits.at n=21A078222
- The work performed by a partial function f:{1,...,n}->{1,...,n} is defined to be work(f)=sum(|i-f(i)|,i in dom(f)); a(n) is equal to sum(work(f)) where the sum is over all partial functions f:{1,...,n}->{1,...,n}.at n=8A111873
- a(n) is the determinant of an n X n Hermitian Toeplitz matrix whose first row consists of n, (n-1)*i, (n-2)*i, ..., 3*i, 2*i, i, where i denotes the imaginary unit.at n=10A359561