Rearrangement of triangular numbers such that the most significant digits follow the cyclic pattern 1,2,3,4,5,6,7,8,9,1,2,3,4,5,6,7,8,9,1,2,3,...

A077690

Rearrangement of triangular numbers such that the most significant digits follow the cyclic pattern 1,2,3,4,5,6,7,8,9,1,2,3,4,5,6,7,8,9,1,2,3,...

Terms

    a(0) =1a(1) =21a(2) =3a(3) =45a(4) =55a(5) =6a(6) =78a(7) =820a(8) =91a(9) =10a(10) =28a(11) =36a(12) =406a(13) =528a(14) =66a(15) =703a(16) =861a(17) =903a(18) =15a(19) =210a(20) =300a(21) =435a(22) =561a(23) =630a(24) =741a(25) =8001a(26) =946a(27) =105a(28) =231a(29) =325

External references