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A099107 a(n) is the least M such that there are n values in 0..M with no two values summing to a square. 2
0, 2, 3, 5, 8, 10, 11, 14, 18, 20, 21, 24, 26, 28, 32, 34, 36, 38, 40, 42, 48, 52, 54, 56, 58, 60, 62, 64, 72, 74, 76, 78, 80, 82, 84, 86, 88, 99, 101, 103, 105, 107, 109, 111, 114, 116, 118, 129, 130, 133, 135, 137, 139, 141, 143, 145, 152, 159, 160, 163, 167 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Examples where the solution is unique:

(14,28) 2 4 6 9 11 13 15 17 18 20 22 24 26 28

(16,34) 3 5 8 10 12 14 16 18 19 21 23 25 27 29 32 34

(17,36) 3 5 8 10 12 14 16 18 19 21 23 25 27 29 32 34 36

(18,38) 3 5 8 10 12 14 16 18 19 21 23 25 27 29 32 34 36 38

(19,40) 3 5 8 10 12 14 16 18 19 21 23 25 27 29 32 34 36 38 40

(20,42) 3 5 8 10 12 14 16 18 19 21 23 25 27 29 32 34 36 38 40 42

LINKS

Rob Pratt, Table of n, a(n) for n = 1..100

CROSSREFS

If the numbers are taken from 1..M instead of 0..M, we get A210380.

Sequence in context: A295085 A153000 A222172 * A261255 A085833 A066896

Adjacent sequences:  A099104 A099105 A099106 * A099108 A099109 A099110

KEYWORD

nonn

AUTHOR

Jean-Charles Meyrignac (euler(AT)free.fr), Nov 14 2004

EXTENSIONS

Definition clarified and sequence extended by Don Reble and M. F. Hasler, Jul 08 2014

More terms from Rob Pratt, Jul 11 2014

STATUS

approved

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Last modified April 20 22:22 EDT 2019. Contains 322310 sequences. (Running on oeis4.)