Other parts of the n-th triangle are {m,n}, {a,b,c}:
a(1): {1,2}, {3,4,5};
a(2): {8,21}, {377,336,505};
a(3): {1,78}, {6083,156,6085};
a(4): {26,37}, {693,1924,2045};
a(5): {49,62}, {1443,6076,6245};
a(6): {11,158}, {24843,3476,25085};
a(7): {2376,2393}, {81073,11371536,11371825};
a(8): {4569,4858}, {2724403,44392404,44475925};
a(9): {2974,3773}, {5390853,22441804,23080205};
a(10): {5402,6829}, {17453637,73780516,75816845};
a(11): {121,38132}, {1454034783,9227944,1454064065};
a(12): {28407,29336}, {53643247,1666695504,1667558545};
a(13): {16593,35986}, {1019664547,1194231396,1570319845};
a(14): {3168,241339}, {58234476697,1529123904,58254549145};
a(15): {160034,213573}, {20002545173,68357882964,71224307485}.
