23121
domain: N
Appears in sequences
- Squares written in base 4.at n=27A001739
- Cubes written in base 4.at n=8A004634
- Powers of 3 written in base 4.at n=6A004658
- Number of partitions satisfying cn(0,5) < cn(1,5) + cn(4,5).at n=37A039842
- a(n) = n*(5*n^2 - 3)/2.at n=21A063522
- Number of partitions of n into 5-smooth parts.at n=41A112581
- Weight distribution of [63,30,13] primitive binary BCH code.at n=16A151769
- a(n) = 20*n^2 + 1.at n=34A158493
- a(n) = 80*n^2 + 1.at n=17A158776
- A bisection of A063522.at n=10A160674
- Numbers n such that (n^6 + 1091)/4 is prime.at n=15A181112
- Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+2x+3y>0.at n=18A211621
- Number of nonnegative integers with property that their base 9/7 expansion (see A024655) has n digits.at n=33A245429
- Number of minimal total dominating sets in the n-barbell graph.at n=17A302650
- Unique representation of nonnegative numbers by iterated tribonacci A, B and C sequences.at n=56A316713