3544453
domain: N
Appears in sequences
- Palindromic triangular numbers.at n=18A003098
- Positive integers k such that k divides 12^k - 1.at n=25A014951
- Palindromic binomial coefficients C(n,k) for k >= 2.at n=27A051641
- Triangular numbers whose digit reversal is also a triangular number.at n=36A061455
- Triangular numbers whose reverse is also triangular.at n=24A066569
- Triangular numbers composed of digits {3,4,5}.at n=7A119182
- Triangular numbers of the form p*w, where p is a prime number and w is a prime power (A025475).at n=28A225674
- Numbers n dividing u(n), where the Lucas sequence is defined u(i) = u(i-1) - 3*u(i-2) with initial conditions u(0)=0, u(1)=1.at n=29A228440
- Palindromic triangular number with palindromic index.at n=7A229236