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9, 45, 81, 117, 153, 189, 225, 261, 297, 333, 369, 405, 441, 477, 513, 549, 585, 621, 657, 693, 729, 765, 801, 837, 873, 909, 945, 981, 1017, 1053, 1089, 1125, 1161, 1197, 1233, 1269, 1305, 1341, 1377, 1413, 1449, 1485, 1521, 1557, 1593, 1629, 1665, 1701
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| Numbers of the 9th column of positive numbers in the square array of nonnegative and polygonal numbers A139600. Also, numbers of the 9th column in the square array A057145.
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..5000
Index to sequences with linear recurrences with constant coefficients, signature (2,-1).
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MATHEMATICA
| Range[9, 7000, 36] (* From Vladimir Joseph Stephan Orlovsky, Jul 23 2011 *)
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PROG
| (MAGMA) [9*(4*n + 1): n in [0..60]]; // Vincenzo Librandi, Jul 23 2011
(PARI) a(n)=36*n+9 \\ Charles R Greathouse IV, Oct 05 2011
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CROSSREFS
| Sequence in context: A053816 A044492 A067536 * A068314 A152996 A188351
Adjacent sequences: A139606 A139607 A139608 * A139610 A139611 A139612
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KEYWORD
| easy,nonn
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AUTHOR
| Omar E. Pol (info(AT)polprimos.com), Apr 27 2008
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