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A068889
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Triangular numbers with property that digits alternate in parity individually as well as in concatenation with previous terms.
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0
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1, 6, 10, 36, 78, 105, 210, 325, 496, 561, 630, 703, 2145, 5050, 6105, 8385, 23653, 30381, 41616, 50721, 67896, 70125, 81810, 90525, 210925, 214185
(list; graph; refs; listen; history; internal format)
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