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A109441
Sorted union of the numbers (k + 1)^2 - 1, (2*k + 1)*(2*k + 1 - 1)/2, (2*k)^2, (2*k)*(2*k - 1)/2 for k >= 0, with duplicates removed.
1
0, 1, 3, 4, 6, 8, 10, 15, 16, 21, 24, 28, 35, 36, 45, 48, 55, 63, 64, 66, 78, 80, 91, 99, 100, 105, 120, 136, 143, 144, 153, 168, 171, 190, 195, 196, 210, 224, 231, 253, 255, 256, 276, 300, 324, 325, 351, 378, 400, 406, 435, 465, 484, 576, 676, 784, 900
OFFSET
1,3
MATHEMATICA
Union[Flatten[Table[{(n + 1)^2 - 1, (2*n + 1)*(2*n + 1 - 1)/2, (2*n)^2, (2*n)*(2*n - 1)/2}, {n, 0, 15}]]]
CROSSREFS
Sequence in context: A373846 A120150 A262892 * A343883 A277319 A176986
KEYWORD
nonn,less
AUTHOR
Roger L. Bagula, Jun 22 2007
EXTENSIONS
Edited by Georg Fischer, Aug 14 2023
STATUS
approved