221322261601
domain: N
Appears in sequences
- a(n) and floor(a(n)/6) are both squares; i.e., squares that remain squares when written in base 6 and last digit is removed.at n=19A055851
- Numbers n such that n-1 and n are a pair of consecutive powerful numbers.at n=15A078326
- Duplicate of A078326.at n=15A118893
- a(n) = 10*a(n-1)-a(n-2)-4 with a(1)=1 and a(2)=3.at n=12A171640