231361
domain: N
Appears in sequences
- Crystal ball sequence for D_4 lattice.at n=15A007204
- Squares of odd octagonal numbers.at n=6A014793
- Squares with internal digits also forming a square > 0.at n=19A069701
- Squares whose internal digits form a square.at n=35A077355
- Perfect squares in A133459; or perfect squares that are the sums of two nonzero pentagonal pyramidal numbers.at n=24A136359
- Number of (w,x,y,z) with all terms in {1,...,n} and w<=2x and y<=2z.at n=25A212506
- Number of quadruples (w,x,y,z) with all terms in {0,...,n} such that w-x, x-y, and y-z all have the same parity.at n=30A212893
- Discriminants with exactly 2 associated cyclic cubic fields.at n=15A343002
- Discriminants with at least 2 associated cyclic cubic fields.at n=15A343024
- Perfect powers k such that A052409(k) is equal to A052409(A366275(k)).at n=18A366278
- Squares whose sum of prime factors (with multiplicity) is also a perfect square.at n=30A392304