A119427 Concatenation of 3 or more numbers in arithmetic progression with negative common difference.
210, 321, 420, 432, 531, 543, 630, 642, 654, 741, 753, 765, 840, 852, 864, 876, 951, 963, 975, 987, 1050, 1062, 1074, 1086, 1098, 1161, 1173, 1185, 1197, 1260, 1272, 1284, 1296, 1371, 1383, 1395, 1470, 1482, 1494, 1581, 1593, 1680, 1692, 1791, 1890
Offset: 0
Examples
420 is the concatenation of 4, 2 and 0, which have common difference -2.
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