25327
domain: N
Appears in sequences
- Pseudoprimes to base 5.at n=35A005936
- Strong pseudoprimes to base 25.at n=20A020251
- Strong pseudoprimes to base 36.at n=22A020262
- Strong pseudoprimes to base 37.at n=13A020263
- Strong pseudoprimes to base 87.at n=18A020313
- Strong pseudoprimes to base 88.at n=16A020314
- Expansion of (1+2*x+3*x^2+4*x^3+5*x^4)/(1-x-x^2-x^3-x^4-x^5).at n=14A023424
- a(n) = s(n+3)/6, where s is A024731.at n=13A024732
- Numbers k that divide the (left) concatenation of all numbers <= k written in base 20 (most significant digit on left).at n=9A029489
- a(n) = ceiling((n^3)/2).at n=37A036486
- Base 6 digits are, in order, the first n terms of the periodic sequence with initial period 3,1.at n=5A037585
- Thickened cube numbers: a(n) = n*(n^2 + (n-1)^2) + (n-1)*2*n*(n-1).at n=18A050492
- Pentanacci numbers with initial conditions a(0)=5, a(1)=1, a(2)=3, a(3)=7, a(4)=15.at n=15A074048
- Least k such that prime(n)^3 divides binomial(2k,k).at n=11A110496
- The sum of all the entries in an n X n Cayley table for multiplication in Z_n.at n=37A160255
- The odd composites c such that c=q*g*j*y/2 and q+g=j*y where q,g,j,y are distinct primes.at n=38A167629
- a(n) = ((2*n+1)^3+(-1)^n)/2.at n=18A175109
- Numbers n with property that n and 2n are sums of two distinct positive cubes.at n=11A191345
- Left edge of the triangle in A033291.at n=42A192735
- a(n) = n*(5n^2 + 3n + 4) / 6.at n=31A203551