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A197081 Number of partitions of n into distinct positive quarter-squares (cf. A002620). 4
1, 1, 1, 1, 1, 1, 2, 2, 1, 2, 2, 2, 3, 3, 2, 3, 4, 3, 4, 4, 4, 5, 6, 5, 4, 6, 6, 7, 7, 7, 7, 9, 10, 8, 9, 9, 11, 12, 12, 11, 11, 13, 15, 16, 13, 15, 16, 17, 20, 19, 17, 20, 23, 20, 22, 23, 23, 27, 29, 26, 25, 30, 31, 32, 34, 33, 32, 38, 41, 37, 39, 41, 42 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,7

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 0..555

EXAMPLE

a(12) = #{12, 9+2+1, 6+4+2} = 3;

a(24) = #{20+4, 16+6+2, 12+9+2+1, 12+6+4+2} = 4.

PROG

(Haskell)

a197081 = p (drop 2 a002620_list) where

   p _      0             = 1

   p (k:ks) m | m < k     = 0

              | otherwise = p ks (m - k) + p ks m

CROSSREFS

Cf. A197122, A002378, A000290, A000009.

Sequence in context: A000003 A234398 A168208 * A029395 A029282 A289494

Adjacent sequences:  A197078 A197079 A197080 * A197082 A197083 A197084

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Oct 10 2011

STATUS

approved

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Last modified October 19 17:55 EDT 2018. Contains 316376 sequences. (Running on oeis4.)