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A017305 a(n) = 10n + 3. 16
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

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, A017281, A017293.

Sequence in context: A212525 A106099 A273312 * A018709 A121756 A178825

Adjacent sequences:  A017302 A017303 A017304 * A017306 A017307 A017308

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified July 22 12:02 EDT 2017. Contains 289669 sequences.