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Search: id:A077126
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| A077126 |
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Sum of even indexed primes. |
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+0
3
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| 3, 10, 23, 42, 71, 108, 151, 204, 265, 336, 415, 504, 605, 712, 825, 956, 1095, 1246, 1409, 1582, 1763, 1956, 2155, 2378, 2607, 2846, 3097, 3360, 3631, 3912, 4205, 4516, 4833, 5170, 5519, 5878, 6251, 6634, 7031, 7440, 7861, 8294, 8737, 9194, 9657
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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a(2)=10 as p_1=2, p_2=3, p_3=5 and p_4=7, therefore a(2)=p_2+p_4=10
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PROGRAM
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(PARI) pc=1; ps=0; forprime (p=2, 500, pc=3-pc; if (pc==1, ps=ps+p; print1(ps", ")))
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CROSSREFS
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Sequence in context: A027164 A166119 A041403 this_sequence A068043 A145069 A080204
Adjacent sequences: A077123 A077124 A077125 this_sequence A077127 A077128 A077129
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KEYWORD
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nonn
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AUTHOR
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Jon Perry (perry(AT)globalnet.co.uk), Nov 29 2002
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