89253
domain: N
Appears in sequences
- Triangular numbers for which the sum of the digits is a cube.at n=29A117803
- Triangular numbers which are sums of three consecutive primes.at n=11A167788
- Number of (n+6)X9 0..1 matrices with each 7X7 subblock idempotent.at n=12A224583
- Triangular numbers n with digits d_1, d_2, ..., d_k such that d_1*(d_1+1)/2 + ... + d_k*(d_k+1)/2 is a triangular number.at n=46A254957