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A197081 Number of partitions of n into distinct positive quarter-squares (cf. A002620). 5
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
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
Sequence in context: A352072 A365067 A332086 * A029395 A029282 A333123
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Oct 10 2011
STATUS
approved

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Last modified May 22 12:39 EDT 2024. Contains 372755 sequences. (Running on oeis4.)