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A101869
Row 2 of A101866.
2
10, 20, 26, 36, 46, 52, 62, 68, 78, 88, 94, 104, 114, 120, 130, 136, 146, 156, 162, 172, 178, 188, 198, 204, 214, 224, 230, 240, 246, 256, 266, 272, 282, 292, 298, 308, 314, 324, 334, 340, 350, 356, 366, 376, 382, 392, 402, 408, 418, 424, 434, 444, 450, 460, 466, 476, 486
OFFSET
1,1
FORMULA
a(n) = 2*n + 4*ceiling(n*(1 + sqrt(5))/2). - Paolo Xausa, Mar 20 2024
MATHEMATICA
Array[2*# + 4*Ceiling[#*GoldenRatio] &, 100] (* Paolo Xausa, Mar 20 2024 *)
CROSSREFS
Sequence in context: A072592 A229305 A229304 * A015872 A019491 A249989
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jan 28 2005
STATUS
approved