This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A075302 Transpose of array A075300. 4
 0, 2, 1, 4, 5, 3, 6, 9, 11, 7, 8, 13, 19, 23, 15, 10, 17, 27, 39, 47, 31, 12, 21, 35, 55, 79, 95, 63, 14, 25, 43, 71, 111, 159, 191, 127, 16, 29, 51, 87, 143, 223, 319, 383, 255, 18, 33, 59, 103, 175, 287, 447, 639, 767, 511, 20, 37, 67, 119, 207, 351, 575, 895, 1279 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS The top-left corner of the array looks like: 0 2 4 6 8 10 12 14 ... 1 5 9 13 17 21 25 29 ... 3 11 19 27 35 43 51 59 ... 7 23 39 55 71 87 ... 15 47 79 ... This can be used to construct mappings like A059884 and A075173, where the elements of the first row give the bit-positions where to interleave the first element of a finite vector of nonnegative integers, the second row the bit-positions for the second element, etc. LINKS MAPLE A075302 := n -> A075300bi(A002262(n), A025581(n)); A075300bi := (x, y) -> (2^x * (2*y + 1))-1; A002262 := n -> n - binomial(floor((1/2)+sqrt(2*(1+n))), 2); A025581 := n -> binomial(1+floor((1/2)+sqrt(2*(1+n))), 2) - (n+1); CROSSREFS Inverse permutation: A075303. Transpose: A075300. The X-projection is given by A025480 and the Y-projection is A007814(n+1). Cf. A002262, A025581. Sequence in context: A099492 A144203 A239806 * A257911 A257882 A028509 Adjacent sequences:  A075299 A075300 A075301 * A075303 A075304 A075305 KEYWORD nonn,tabl AUTHOR Antti Karttunen, Sep 12 2002 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified October 16 05:44 EDT 2018. Contains 316259 sequences. (Running on oeis4.)