A191327 Increasing sequence generated by these rules: a(1)=1, and if x is in a then [5x/2] and [7x/2] are in a, where [ ]=floor.

1, 2, 3, 5, 7, 10, 12, 17, 24, 25, 30, 35, 42, 59, 60, 62, 75, 84, 87, 105, 122, 147, 150, 155, 187, 206, 210, 217, 262, 294, 304, 305, 367, 375, 387, 427, 467, 514, 515, 525, 542, 654, 655, 721, 735, 759, 760, 762, 917, 937, 967, 1029, 1064, 1067, 1167, 1284, 1285, 1287, 1312, 1354, 1355, 1494, 1634, 1635, 1637, 1799, 1802

Offset

1,2

Comments

See A191323.

Links

Ivan Neretin, Table of n, a(n) for n = 1..10000

Mathematica

h = 5; i = 0; j = 7; k = 0; f = 1; g = 15;
Union[Flatten[NestList[{Floor[h #/2] + i, Floor[j #/2] + k} &, f, g]]]
(* A191327 *)

Crossrefs

Cf. A191323.

Sequence in context: A036964 A067162 A002822 * A109598 A117959 A117952

Adjacent sequences: A191324 A191325 A191326 * A191328 A191329 A191330

Keyword

nonn

Author

Clark Kimberling, May 30 2011

Status

approved