Triangular numbers which have one or more occurrences of exactly seven different digits.

Terms

a(0) =1024596a(1) =1047628a(2) =1053426a(3) =1069453a(4) =1073845a(5) =1078246a(6) =1203576a(7) =1234806a(8) =1345620a(9) =1360425a(10) =1362075a(11) =1386945a(12) =1390278a(13) =1405326a(14) =1430586a(15) =1439056a(16) =1462905a(17) =1486950a(18) =1493856a(19) =1547920a(20) =1549680a(21) =1590436a(22) =1602945a(23) =1624503a(24) =1642578a(25) =1679028a(26) =1684530a(27) =1693720