A061894 -id:A061894 - cp's OEIS frontend

A061892 Lionel-Levine-sequence generated by (1,0,0).

0, 3, 1, 3, 3, 6, 10, 28, 108, 1011, 32511, 9314238, 84560776390, 219625370880235960

Offset: 0

Frank Ellermann, May 13 2001

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).

			a(4) = 3: (1,0,0), (3), (1,1,1), (1,2,3), (1,1,1,2,2,3).

Cf. A011784, A012257, A061893, A061894.

/* 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;

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

A061895 Table of Lionel-Levine-sequence generated by (2,0).

Original entry on oeis.org

2, 0, 2, 2, 1, 1, 2, 2, 1, 1, 2, 2, 3, 4, 1, 1, 1, 1, 2, 2, 2, 3, 3, 4, 4, 5, 6, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 6, 6, 6, 7, 7, 8, 8, 9, 9, 10, 11, 12, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3

Offset: 0

Frank Ellermann, May 13 2001

			a(13) = 4: (2,0),(2,2),(1,1,2,2),(1,1,2,2,3,4)

A061894(5) = 13 = A061895(61), see also A012257.

cp's OEIS Frontend

A061892 Lionel-Levine-sequence generated by (1,0,0).

Views

Author

Keywords

Comments

Examples

Crossrefs

Programs

Rexx