185328
domain: N
Appears in sequences
- a(n) = A078152(2^n).at n=32A078157
- Integers with exactly 100 divisors.at n=11A163816
- Number of arrays of 4 integers in -n..n with sum zero and adjacent elements differing in absolute value.at n=32A202964
- Number of (w,x,y,z) with all terms in {1,...,n} and w<=2x and y>=3z.at n=35A212515
- Number of pairs of orthogonal (-x,y) vectors of length 1*(x+y), where x/y is the n-th rational <= 1, ordered first by y and then x, e.g. 1/1, 1/2, 1/3, 2/3, 1/4, 3/4 ...at n=20A225986
- Number of tribone tilings of an n-triangle.at n=21A334875
- Number of zygodrome numbers in base-10 (A033023) with n or fewer digits.at n=9A374749