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A047410
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Numbers that are congruent to {2, 4, 6} mod 8.
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0
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2, 4, 6, 10, 12, 14, 18, 20, 22, 26, 28, 30, 34, 36, 38, 42, 44, 46, 50, 52, 54, 58, 60, 62, 66, 68, 70, 74, 76, 78, 82, 84, 86, 90, 92, 94, 98, 100, 102, 106, 108, 110, 114, 116, 118, 122, 124, 126, 130, 132, 134
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Apart from initial term(s), dimension of the space of weight 2n cuspidal newforms for Gamma_0( 17 ).
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LINKS
| William A. Stein, Dimensions of the spaces S_k^{new}(Gamma_0(N))
William A. Stein, The modular forms database
Index to sequences with linear recurrences with constant coefficients, signature (1,0,1,-1).
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FORMULA
| a(n) = 2*floor((n-1)/3) + 2*n [From Gary Detlefs (gdetlefs(AT)aol.com), Mar 18 2010]
a(n) = 2*A042968(n). G.f. 2*x*(1+x)*(1+x^2) / ( (1+x+x^2)*(x-1)^2 ). - R. J. Mathar, Dec 05 2011
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CROSSREFS
| Sequence in context: A103799 A175817 A141104 * A164875 A024892 A087136
Adjacent sequences: A047407 A047408 A047409 * A047411 A047412 A047413
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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