1155960
domain: N
Appears in sequences
- Triangular numbers which are 9-almost primes.at n=23A076583
- Triangular numbers that are the difference of nonnegative cubes.at n=27A129965
- Let T(n) = n(n+1)/2 be the n-th triangular number (A000217); a(n) = T(8T(n)).at n=19A185096
- Triangular numbers that are the product of a triangular number and a square number (both greater than 1).at n=20A253650