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Table of n, a(n) for n=1..49.
In binary representation 70='1000110' has three 1's and A000040(70)=349='101011101' has three 1's: therefore 349 is a term.
Cf. A072580, A072581, A072439, A072584.
Sequence in context: A000956 A031906 A045390 * A186687 A256145 A096172
Adjacent sequences: A072579 A072580 A072581 * A072583 A072584 A072585
Reinhard Zumkeller, Jun 23 2002