A068739 Width of the bit-masks A068221 & A068222 (number of digits in A068223 & A068224).

1, 2, 5, 13, 31, 72, 156, 337, 701, 1452, 2964, 6001, 12108, 24324, 48871, 97988, 196224, 392768, 785946, 1572353, 3145554, 6291980

Offset

1,2

Links

Table of n, a(n) for n=1..22.

Formula

a(1) = 1, a(n) = 2*A068739(n-1) + A068059(n-1) - 1

Crossrefs

Sequence in context: A363513 A180302 A116701 * A063636 A076501 A369434

Adjacent sequences: A068736 A068737 A068738 * A068740 A068741 A068742

Keyword

nonn

Author

Antti Karttunen, Feb 26 2002

Status

approved