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3, 15, 27, 39, 51, 63, 75, 87, 99, 111, 123, 135, 147, 159, 171, 183, 195, 207, 219, 231, 243, 255, 267, 279, 291, 303, 315, 327, 339, 351, 363, 375, 387, 399, 411, 423, 435, 447, 459, 471, 483, 495, 507, 519, 531, 543, 555, 567, 579, 591, 603, 615, 627, 639
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| Apart from initial term(s), dimension of the space of weight 2n cusp forms for Gamma_0( 44 ).
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..2000
Tanya Khovanova, Recursive Sequences
William A. Stein, Dimensions of the spaces S_k(Gamma_0(N))
William A. Stein, The modular forms database
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FORMULA
| a(n) = 2*a(n-1) - a(n-2). [From Vincenzo Librandi, Jun 07 2011]
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MATHEMATICA
| 12*Range[0, 200]+3 (*From Vladimir Joseph Stephan Orlovsky, Feb 19 2011*)
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PROG
| (MAGMA) [12*n+3: n in [0..60]]; // Vincenzo Librandi, Jun 07 2011
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CROSSREFS
| Cf. A008594, A017533, A017545.
Sequence in context: A121250 A105549 A080065 * A147041 A002259 A050848
Adjacent sequences: A017554 A017555 A017556 * A017558 A017559 A017560
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KEYWORD
| nonn,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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