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Table of n, a(n) for n=1..105.
Flatten[IntegerDigits[2*Range - 1]] (* Stefan Steinerberger, Apr 14 2006 *)
Sequence in context: A200655 A249439 A127050 * A141518 A225985 A032764
Adjacent sequences: A031309 A031310 A031311 * A031313 A031314 A031315
More terms from Stefan Steinerberger, Apr 14 2006