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A194448 Number of parts > 1 in the n-th region of the shell model of partitions. 6
0, 1, 1, 1, 2, 1, 2, 1, 2, 1, 4, 1, 2, 1, 4, 1, 2, 1, 4, 1, 1, 7, 1, 2, 1, 4, 1, 2, 1, 8, 1, 2, 1, 4, 1, 1, 7, 1, 2, 1, 1, 12, 1, 2, 1, 4, 1, 2, 1, 8, 1, 1, 3, 1, 1, 14, 1, 2, 1, 4, 1, 1, 7, 1, 2, 1, 1, 12, 1, 2, 1, 4, 1, 2, 1, 1, 21, 1, 2, 1, 4, 1, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

Also triangle read by rows: T(n,k) = number of parts > 1 in the k-th region of the last section of the set of partitions of n.

LINKS

Table of n, a(n) for n=1..83.

EXAMPLE

Written as a triangle:

0;

1;

1;

1,2;

1,2;

1,2,1,4;

1,2,1,4;

1,2,1,4,1,1,7;

1,2,1,4,1,2,1,8;

1,2,1,4,1,1,7,1,2,1,1,12;

1,2,1,4,1,2,1,8,1,1,3,1,1,14;

1,2,1,4,1,1,7,1,2,1,1,12,1,2,1,4,1,2,1,1,21;

CROSSREFS

Row sums give A138135. Row n has length A187219(n).

Cf. A000041, A002865, A135010, A138121, A138137, A138879, A186114, A186412, A193870, A194436, A194437, A194438, A194439, A194446, A194447, A194449.

Sequence in context: A308455 A214716 A116933 * A238950 A088433 A264440

Adjacent sequences:  A194445 A194446 A194447 * A194449 A194450 A194451

KEYWORD

nonn,tabf

AUTHOR

Omar E. Pol, Dec 10 2011

STATUS

approved

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Last modified June 16 14:38 EDT 2019. Contains 324152 sequences. (Running on oeis4.)