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A138136 Triangle read by rows: row n lists the parts > 1 of the last section of the set of partitions of n. 9
0, 2, 3, 4, 2, 2, 5, 3, 2, 6, 4, 2, 3, 3, 2, 2, 2, 7, 5, 2, 4, 3, 3, 2, 2, 8, 6, 2, 5, 3, 4, 4, 4, 2, 2, 3, 3, 2, 2, 2, 2, 2, 9, 7, 2, 6, 3, 5, 4, 5, 2, 2, 4, 3, 2, 3, 3, 3, 3, 2, 2, 2, 10, 8, 2, 7, 3, 6, 4, 6, 2, 2, 5, 5, 5, 3, 2, 4, 4, 2, 4, 3, 3, 4, 2, 2, 2, 3, 3, 2, 2, 2, 2, 2, 2, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See A138138 and A138151 for more information.

LINKS

Robert Price, Table of n, a(n) for n = 1..9514, 25 rows.

EXAMPLE

Triangle begins:

0;

2;

3;

4,2,2;

5,3,2;

6,4,2,3,3,2,2,2;

7,5,2,4,3,3,2,2;

8,6,2,5,3,4,4,4,2,2,3,3,2,2,2,2,2;

9,7,2,6,3,5,4,5,2,2,4,3,2,3,3,3,3,2,2,2;

10,8,2,7,3,6,4,6,2,2,5,5,5,3,2,4,4,2,4,3,3,4,2,2,2,3,3,2,2,2,2,2,2,2;

...

MATHEMATICA

Join[{0}, Table[Cases[IntegerPartitions[n], x_ /; Last[x] != 1], {n, 10}]] // Flatten (* Robert Price, May 22 2020 *)

CROSSREFS

Cf. A138137, A138138, A138151.

Sequence in context: A214065 A182710 A182711 * A056472 A162247 A264809

Adjacent sequences:  A138133 A138134 A138135 * A138137 A138138 A138139

KEYWORD

nonn,tabf,changed

AUTHOR

Omar E. Pol, Mar 23 2008

STATUS

approved

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Last modified June 5 09:46 EDT 2020. Contains 334829 sequences. (Running on oeis4.)