828828
domain: N
Appears in sequences
- Palindromic triangular numbers.at n=15A003098
- Smallest triangular number containing exactly n 8's.at n=3A036525
- Palindromes with exactly 8 prime factors (counted with multiplicity).at n=18A046334
- Palindromic binomial coefficients C(n,k) for k >= 2.at n=23A051641
- Palindromic hexagonal numbers.at n=9A054969
- Triangular numbers whose digit reversal is also a triangular number.at n=31A061455
- Triangular numbers that contain exactly 2 different digits.at n=28A062691
- Numbers k such that sopfr(k) = ud(k), where sopfr = A001414 and ud = A034444.at n=21A064029
- Triangular numbers whose reverse is also triangular.at n=20A066569
- Largest n-digit palindromic triangular number, or 0 if no such number exists.at n=5A068643
- Triangular numbers containing 2n digits obtained by duplicating the first n digits; i.e., triangular numbers in A020338.at n=10A068899
- Smallest palindromic multiple of (n with trailing 0's omitted, A004151) using only nonzero digits of n; all digits must appear; or 0 if no such number exists.at n=27A083960
- Smallest palindromic multiple of n in which the digit string of n appears as sandwiched between at least a pair of digits, or 0 if n = 10k or no such number exists.at n=27A084043
- Triangular numbers m such that A040115(m) is also triangular.at n=32A087597
- Largest n-digit term of A087597, or 0 if no such number exists.at n=5A087600
- Triangular numbers with only even digits.at n=30A117978
- Triangular numbers composed of digits {0,2,8}.at n=5A119055
- Triangular numbers composed of digits {1,2,8}.at n=9A119107
- Triangular numbers composed of digits {2,3,8}.at n=3A119156
- Triangular numbers composed of digits {2,4,8}.at n=2A119162