A167502 Sequence A167500 (= list of nonzero bits in this sequence), written in binary.

1, 10, 100, 111, 1000, 1001, 1010, 1110, 10001, 10010, 10100, 10110, 10111, 11000, 11010, 11110, 11111, 100010, 100100, 100110, 101001, 101011, 101100, 101110, 110000, 110001, 110010, 110011, 110100, 111000, 111001, 111011, 111101, 111110

Offset: 1

Author

M. F. Hasler, Nov 05 2009

Keywords

• base
• nonn

Examples

			Sequence A167500 starts 1,2,4,7,... = 1,10,100,111,.... when written in binary.
		

Crossrefs

Cf. A167500 (this sequence written in decimal), A167501 (the digits of this sequence).

Programs

PARI

a=b=[]; for(n=1,30, #b >= n & for( i=a[n-1]+1,#b, b[i] & (a=concat(a,i)) & break); #asubst(Pol(binary(t)),x,10),a)

Formula

A167502 = A007088 o A167500