511566

Appears in sequences

• a(n) = smallest triangular number having no digit in common with the previous term, with a(1) = 1.at n=36A068818
• Triangular numbers obtained as a concatenation of successive terms of A081847.at n=8A082235
• Triangular numbers composed of digits {1,5,6}.at n=13A119132
• a(n) = A185128(n) - A185129(n).at n=23A185253