A024605 Number in position n when the numbers i^2 - i*j + j^2 (1 <= i <= j) are arranged in nondecreasing order.

1, 3, 4, 7, 7, 9, 12, 13, 13, 16, 19, 19, 21, 21, 25, 27, 28, 28, 31, 31, 36, 37, 37, 39, 39, 43, 43, 48, 49, 49, 49, 52, 52, 57, 57, 61, 61, 63, 63, 64, 67, 67, 73, 73, 75, 76, 76, 79, 79, 81, 84, 84, 91, 91, 91, 91, 93, 93, 97, 97, 100, 103, 103, 108, 109, 109, 111, 111, 112, 112, 117, 117

Offset

1,2

Links

Table of n, a(n) for n=1..72.

Crossrefs

Sequence in context: A197034 A180020 A162431 * A215630 A168563 A261368

Adjacent sequences: A024602 A024603 A024604 * A024606 A024607 A024608

Keyword

nonn

Author

Clark Kimberling

Status

approved