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A061892 Lionel-Levine-sequence generated by (1,0,0). 3
0, 3, 1, 3, 3, 6, 10, 28, 108, 1011, 32511, 9314238, 84560776390, 219625370880235960 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
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).
LINKS
EXAMPLE
a(4) = 3: (1,0,0), (3), (1,1,1), (1,2,3), (1,1,1,2,2,3).
PROG
(Rexx) /* replace 1 0 0 with 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;
CROSSREFS
Sequence in context: A005885 A333334 A205145 * A038573 A246591 A173465
KEYWORD
nonn,more
AUTHOR
Frank Ellermann, May 13 2001
EXTENSIONS
a(11) from Naohiro Nomoto, May 10 2002
a(12) from Michael Anthony Keyes, Apr 14 2021
a(13) from Michael Anthony Keyes, May 13 2021
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)