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

1,2

Links

Table of n, a(n) for n=1..34.

Formula

A167502 = A007088 o A167500

Example

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

Prog

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

Crossrefs

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

Sequence in context: A099820 A273245 A276349 * A135652 A035504 A072366

Adjacent sequences: A167499 A167500 A167501 * A167503 A167504 A167505

Keyword

base,nonn

Author

M. F. Hasler, Nov 05 2009

Status

approved