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A110624 Column 13 of array illustrated in A089574 and related to A034261. +0
1
2, 148, 2159, 16746 (list; graph; listen)
OFFSET

1,1

COMMENT

The 77 applicable partitions range from n = 20 through n=26 with the following frequency distribution: 2, 9, 16, 15, 14, 9 and 12.

EXAMPLE

A110624(1) = 2 because the two relevant partitions of 20 are 4+4+4+4+4 and 5+5+5+5 and can not be permuted.

A110624(2) = 148 because at n = 21 the relevant partitions can be permuted in 20 plus 128 = 148 ways.

The 20 ways are apparent from A034261 by observing that 9 + 11 = 20 in the subsequences 1,9,39,... and 1,11,56,...

and the 128 ways result from examining the nine partitions of n = 21 having 3,31,32,33,7,211,221,311 and 411 degrees.

A110624(4)= A110554(13) = 16746.

CROSSREFS

Cf. A089574 A034261 A110554.

Sequence in context: A074319 A071064 A014080 this_sequence A062596 A142415 A068987

Adjacent sequences: A110621 A110622 A110623 this_sequence A110625 A110626 A110627

KEYWORD

more,nonn

AUTHOR

Alford Arnold (Alford1940(AT)aol.com), Aug 26 2005

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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.


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