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Search: id:A017305
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| 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
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Apart from initial term(s), dimension of the space of weight 2n cusp forms for Gamma_0( 38 ).
For many of these numbers n (13, 23, 33, 53, 63, 103, etc), (n^2+1)/10 is prime [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jan 09 2009]
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LINKS
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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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PROGRAM
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(Other) sage: [i+3 for i in range(443) if gcd(i, 10) == 10] # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), May 20 2009]
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CROSSREFS
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Sequence in context: A043501 A062667 A106099 this_sequence A018709 A121756 A147473
Adjacent sequences: A017302 A017303 A017304 this_sequence A017306 A017307 A017308
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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