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A039822 Number of different coefficient values in expansion of Product (1+q^i), i=1 to n. 1
1, 1, 2, 2, 3, 5, 8, 14, 18, 24, 30, 37, 43, 50, 58, 66, 74, 83, 93, 103, 113, 124, 136, 148, 160, 173, 187, 201, 215, 230, 246, 262, 278, 295, 313, 331, 349, 368, 388, 408, 428, 449, 471, 493, 515, 538, 562, 586, 610, 635 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..50.

FORMULA

It appears that for n>11, a(n) = floor((n^2+3n-6)/4). - Ralf Stephan, Jun 10 2005

CROSSREFS

Sequence in context: A293643 A022863 A236393 * A025591 A028409 A183559

Adjacent sequences:  A039819 A039820 A039821 * A039823 A039824 A039825

KEYWORD

nonn

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified March 25 20:10 EDT 2019. Contains 321477 sequences. (Running on oeis4.)