181503

Appears in sequences

• Triangular numbers for which the sum of the digits equals the sum of the digits of the next triangular number.at n=29A117511
• Triangular numbers T such that T+10 is the next prime after T.at n=26A129540
• a(n) = A185128(n) - A185129(n).at n=13A185253
• Table read by rows: T(n,k) is the smallest triangular number that begins a run of exactly k consecutive triangular numbers with n divisors, or 0 if no such run exists.at n=33A319038
• Numbers that start a run of four consecutive triangular numbers with four distinct prime factors.at n=26A349773