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Search: id:A143808
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| A143808 |
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Triangle read by rows, first n terms of the sequence (1, 2, 4, 10,...) followed by P(n); where (2, 4, 10, 12,...) = twice Pell numbers. |
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+0
2
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| 1, 1, 1, 1, 2, 2, 1, 2, 4, 5, 1, 2, 4, 10, 12, 1, 2, 4, 10, 24, 29, 1, 2, 4, 10, 24, 58, 70, 1, 2, 4, 10, 24, 58, 140, 169, 1, 2, 4, 10, 24, 58, 140, 338, 408, 1, 2, 4, 10, 24, 58, 140, 338, 816, 985
(list; table; graph; listen)
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OFFSET
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0,5
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COMMENT
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Row sums = A000129(n), the Pell numbers: (1, 2, 5, 12,...).
First few rows of the triangle =
1;
1, 1;
1, 2, 2;
1, 2, 4, 5;
1, 2, 4, 10, 12;
1, 2, 4, 10, 24, 29;
1, 2, 4, 10, 24, 58, 70;
1, 2, 4, 10, 24, 58, 140, 169;
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CROSSREFS
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A000129
Sequence in context: A144218 A098691 A035364 this_sequence A059594 A125678 A091562
Adjacent sequences: A143805 A143806 A143807 this_sequence A143809 A143810 A143811
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KEYWORD
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nonn,tabl
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Sep 01 2008
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