

A210942


Triangle read by rows in which row n lists the parts > 1 of the nth 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
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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 nth 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 nth record is T(A000041(n),1).
Cf. A135010, A138121, A182699, A182709, A183152, A186114, A187219, A194436A194439, A194447A194448, 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



