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 A017305 a(n) = 10n + 3. 24
 3, 13, 23, 33, 43, 53, 63, 73, 83, 93, 103, 113, 123, 133, 143, 153, 163, 173, 183, 193, 203, 213, 223, 233, 243, 253, 263, 273, 283, 293, 303, 313, 323, 333, 343, 353, 363, 373, 383, 393, 403, 413, 423, 433, 443, 453, 463, 473, 483, 493, 503, 513, 523, 533 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Apart from initial term(s), dimension of the space of weight 2n cusp forms for Gamma_0( 38 ). LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..5000 Tanya Khovanova, Recursive Sequences William A. Stein, Dimensions of the spaces S_k(Gamma_0(N)) William A. Stein, The modular forms database Index entries for linear recurrences with constant coefficients, signature (2,-1). FORMULA a(n) = A017198(n) - A156677(n+2). - Reinhard Zumkeller, Jul 13 2010 a(n) = 2*a(n-1) - a(n-2). - Vincenzo Librandi, May 28 2011 G.f.: ( 3+7*x ) / (x-1)^2 . - R. J. Mathar, Apr 11 2016 E.g.f.: exp(x)*(3 + 10*x). - Stefano Spezia, Aug 22 2023 MATHEMATICA Range[3, 1000, 10] (* Vladimir Joseph Stephan Orlovsky, May 28 2011 *) PROG (Magma) [10*n+3: n in [0..60]]; // Vincenzo Librandi, May 28 2011 CROSSREFS Cf. A008592, A017198, A017281, A017293, A156677. Sequence in context: A212525 A106099 A273312 * A367296 A018709 A121756 Adjacent sequences: A017302 A017303 A017304 * A017306 A017307 A017308 KEYWORD nonn,easy AUTHOR N. J. A. Sloane STATUS approved

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Last modified February 27 21:03 EST 2024. Contains 370378 sequences. (Running on oeis4.)