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Search: id:A131937
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| A131937 |
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a(1)=1; a(2)=4. a(n) = a(n-1) + (nth positive integer which does not occur in sequence A131938). |
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+0
2
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| 1, 4, 8, 14, 21, 29, 38, 49, 61, 74, 88, 103, 120, 138, 157, 177, 198, 220, 244, 269, 295, 322, 350, 379, 409, 440, 473, 507, 542, 578, 615, 653, 692, 732, 773, 816, 860, 905, 951, 998, 1046, 1095, 1145, 1196, 1248, 1302, 1357, 1413, 1470, 1528
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OFFSET
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1,2
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EXAMPLE
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A131938: 2,5,10,16,23,32,42,53,...
Positive integers not in A131938: 1,3,4,6,7,8,9,11,...
So A131937(8) = A131937(7) + 11 = 49.
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CROSSREFS
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Cf. A131938.
Sequence in context: A049420 A055507 A121896 this_sequence A088804 A027924 A006578
Adjacent sequences: A131934 A131935 A131936 this_sequence A131938 A131939 A131940
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KEYWORD
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nonn
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AUTHOR
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Leroy Quet (q1qq2qqq3qqqq(AT)yahoo.com), Jul 30 2007
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EXTENSIONS
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More terms from Farideh Firoozbakht (mymontain(AT)yahoo.com), Aug 07 2007
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