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Search: id:A061892
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| A061892 |
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Lionel-Levine-sequence generated by (1,0,0). |
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+0
3
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| 0, 3, 1, 3, 3, 6, 10, 28, 108, 1011, 32511, 9314238
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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A011784 allows the addition of a(-1)=0 and a(0)=2 using row A012257(-2)=1 and A012257(-1)=0 resp. row A012257(0)=2. In this sense A011784 / A012257 are "generated" by (1,0), A061892 / A061893 by (1,0,0), A061894 / A061895 by (2,0).
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EXAMPLE
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a(4) = 3: (1,0,0),(3),(1,1,1),(1,2,3),(1,1,1,2,2,3)
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PROGRAM
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(REXX) /* replace 1 0 0 by 1 0 to get A011784 */
S = ''; A = 1 0 0; do N = 1 to 10; T = words( A );
S = S word( A, T ); B = A; A = ''; do K = 1 to T;
A = A space( copies( K '', word( B, T + 1 - K )));
end K; end N; T = words( A ); say S word( A, T ) T;
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CROSSREFS
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Cf. A011784, A012257, A061893, A061894.
Sequence in context: A078555 A087891 A005885 this_sequence A038573 A151837 A163381
Adjacent sequences: A061889 A061890 A061891 this_sequence A061893 A061894 A061895
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KEYWORD
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nonn,easy
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AUTHOR
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Frank.Ellermann(AT)t-online.de, May 13 2001
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EXTENSIONS
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One more term from Naohiro Nomoto (n_nomoto(AT)yabumi.com), May 10 2002
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