A008320 Smallest number that is not the sum of squares of two distinct earlier terms.

1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 15, 16, 18, 19, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 38, 39, 41, 42, 43, 44, 46, 47, 48, 49, 51, 54, 55, 56, 57, 59, 60, 61, 62, 63, 64, 66, 67, 69, 70, 71, 72, 74, 75, 76, 77, 78, 79, 81, 83, 84, 86, 87, 88, 89, 91, 92, 93, 94

Offset

1,2

Links

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

Mihaly Bencze [Beneze], Smarandache Recurrence Type Sequences, Unknown source, pp. 99-102. Originally appeared in Bull. Pure Appl. Sciences.

F. Smarandache, Sequences of Numbers Involved in Unsolved Problems.

Eric Weisstein's World of Mathematics, Smarandache Sequences.

Mathematica

FixedPoint[Complement[Range@100, Flatten@Table[#[[i]]^2 + #[[j]]^2, {i, Length[#]}, {j, i - 1}]] &, {}] (* Ivan Neretin, Jun 05 2016 *)

Crossrefs

A026468 is the version without "distinct".

Sequence in context: A173552 A188010 A350349 * A004439 A050126 A013939

Adjacent sequences: A008317 A008318 A008319 * A008321 A008322 A008323

Keyword

nonn

Author

R. Muller

Extensions

More terms from David W. Wilson

Status

approved