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Search: id:A139598
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| 0, 8, 16, 32, 48, 72, 96, 128, 160, 200, 240, 288, 336, 392, 448, 512, 576, 648, 720, 800, 880, 968, 1056, 1152, 1248, 1352, 1456, 1568, 1680, 1800, 1920, 2048, 2176, 2312, 2448, 2592, 2736, 2888, 3040, 3200, 3360, 3528, 3696, 3872
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Sequence found by reading the line from 0, in the direction 0, 8,... and the line from 16, in the direction 16, 48,..., in the square spiral whose vertices are the triangular numbers A000217.
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LINKS
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O. E. Pol, Determinacion geometrica de los numeros primos y perfectos.
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FORMULA
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Array read by rows: row n gives 8*n^2 + 8n, 8*(n+1)^2.
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EXAMPLE
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Array begins:
0, 8
16, 32
48, 72
96, 128
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CROSSREFS
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Cf. A000217, A035008, A046092, A139098, A077221, A139591, A139592, A139593, A139595, A139596, A139597.
Sequence in context: A018922 A020948 A106841 this_sequence A137243 A068935 A054743
Adjacent sequences: A139595 A139596 A139597 this_sequence A139599 A139600 A139601
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KEYWORD
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easy,nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), May 03 2008
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