A093110 Numbers that can be written as a sum of three elements from A051912.

0, 1, 2, 3, 4, 5, 6, 8, 9, 12, 13, 14, 15, 17, 18, 21, 26, 27, 30, 32, 33, 34, 36, 37, 39, 40, 45, 46, 49, 58, 64, 65, 68, 71, 72, 73, 75, 76, 77, 79, 84, 85, 88, 96, 97, 103, 104, 107, 116, 124, 125, 126, 128, 129, 132, 135, 137, 138, 141, 142, 143, 146, 150, 155, 156

Offset

0,3

Comments

a(n) increases as n^1.42.

Links

Table of n, a(n) for n=0..64.

Example

15 occurs since it can be written as 1 + 1 + 13; 16 does not occur since it cannot be written as a sum of at most 3 terms from the set {0,1,4,13,32,...} = A051912.

Mathematica

li=Take[A051912, 16]; Select[Union[Flatten[Outer[Plus, li, li, li]]], # <= Last[li] &]

Crossrefs

Sequence in context: A100054 A330193 A101271 * A165707 A052063 A129525

Adjacent sequences: A093107 A093108 A093109 * A093111 A093112 A093113

Keyword

easy,nonn

Author

Wouter Meeussen, Mar 20 2004

Status

approved