1

Inspired by Jeremy Gardiner's sequence A253585.

Table of n, a(n) for n=1..95.

(PARI) concat(vector(50, n, if(1<m=A001511(n), vector(m), 1)))

Cf. A001511.

The 1's are located at indices given by A005187(2n+1) = A005187(2n)+1 = A120738(n)+1. - N. J. A. Sloane and M. F. Hasler, Jan 22 2015

Sequence in context: A330682 A230135 A205633 * A170956 A293449 A307424

Adjacent sequences: A252485 A252486 A252487 * A252489 A252490 A252491

nonn

M. F. Hasler, Jan 13 2015

approved