242121642
domain: N
Appears in sequences
- First differences of 7^n (A000420).at n=10A055272
- Numbers n such that sum of the cubes of the distinct prime factors of n equals the sum of the cubes of the digits of n.at n=15A067170
- Number of palindromes of length n (in base 7).at n=18A117859
- Number of palindromes of length n (in base 7).at n=19A117859
- a(n) = (n^3 - n^2)*7^n.at n=6A128990
- Spiral tiling numbers.at n=32A137333
- a(n) = n^10 - n^9.at n=7A240933