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A210942 Triangle read by rows in which row n lists the parts > 1 of the n-th region of the shell model of partitions, with a(1) = 1. 3
1, 2, 3, 2, 4, 2, 3, 5, 2, 2, 4, 2, 3, 6, 3, 2, 2, 3, 5, 2, 4, 7, 3, 2, 2, 2, 4, 2, 3, 6, 3, 2, 2, 5, 4, 8, 4, 3, 2, 2, 2, 2, 3, 5, 2, 4, 7, 3, 2, 2, 3, 6, 3, 5, 9, 4, 3, 3, 2, 2, 2, 2, 2, 4, 2, 3, 6, 3, 2, 2, 5, 4, 8, 4, 3, 2, 2, 2, 2, 4, 7, 3, 6, 5, 10, 5 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

For the definition of "region of n" see A206437. See also A186114. Row n lists the largest part and the parts > 1 of the n-th region of the shell model of partitions. Also 1 together with the numbers > 1 of A206437.

LINKS

Table of n, a(n) for n=1..86.

Omar E. Pol, Illustration of the seven regions of 5

Omar E. Pol, Illustration of the partitions and regions of n, for n = 1..12

EXAMPLE

Written as a triangle begins:

1;

2;

3;

2;

4,2;

3;

5,2,

2;

4,2;

3;

6,3,2,2;

3;

5,2;

4;

7,3,2,2;

CROSSREFS

Column 1 is A141285. Records give A000027. The n-th record is T(A000041(n),1).

Cf. A135010, A138121, A182699, A182709, A183152, A186114, A187219, A194436-A194439, A194447-A194448, A196025, A198381, A206437, A210941.

Sequence in context: A089080 A085058 A183152 * A080771 A025477 A080189

Adjacent sequences:  A210939 A210940 A210941 * A210943 A210944 A210945

KEYWORD

nonn,tabf

AUTHOR

Omar E. Pol, Apr 18 2012

STATUS

approved

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Last modified May 23 07:08 EDT 2019. Contains 323508 sequences. (Running on oeis4.)