27273
domain: N
Appears in sequences
- Divisors of 9999999999.at n=20A027895
- The sequence S defined in A058562.at n=6A058575
- Numbers whose square is a zeroless pandigital number (i.e., use the digits 1 through 9 once).at n=26A071519
- a(n) = T(n) concatenated with reverse(T(n)) divided by 11, where T(n) is the n-th triangular number.at n=24A084008
- Numbers k that are divisors of the number formed by concatenating (k-1), k and (k+1), in that order.at n=31A088877
- Partial sums of A000141.at n=17A175361
- Numbers n such that 10^n - 1 divides 10^(10^100) - 10.at n=42A200879
- Number of ordered triples (w,x,y) with all terms in {-n, ..., -1, 1, ..., n} and 4w + x + y > 0.at n=19A211629
- Odd numbers n containing 65536 as the highest power of 2 in their Collatz (3x+1) iteration.at n=6A247716
- Numbers whose square contains all of the digits 1 through 9.at n=26A294661
- Numbers whose reciprocals have period 10.at n=7A345319