20000002
domain: N
Appears in sequences
- Numbers k such that k^2 contains only digits {0,4,8}, not ending with zero.at n=24A058441
- Palindromes whose digit sum is 4.at n=19A065983
- n, n^2 and n^3 all use only even digits.at n=24A085586
- Base 3 numbers whose square is a palindrome in base 3.at n=34A263607
- Numbers k such that k and k^3 use only even digits.at n=31A353342
- a(1) = 1; for n > 1, a(n) is the smallest unused positive number such that a(n), |a(n) - a(n-1)| and a(1) + ... +a(n) are all palindromes.at n=36A376856
- Distinct values occurring in first differences of A030655(n), listed in order of first appearance.at n=12A386014