1560001
domain: N
Appears in sequences
- Numbers of the form Sum_{j=1..k} sigma(j) that are square.at n=5A062407
- Smallest positive square that contains n consecutive internal 0's.at n=3A066371
- Smallest square k^2 == 1 (mod 10^n) where k > 1.at n=3A085877
- a(n) = (1-2*n^2)^2.at n=25A239607
- Position of first occurrence of n in A331410.at n=18A329662