A039829 Number of different coefficient values in expansion of Product_{i=1..n} (1 + (-q)^i).

2, 2, 3, 4, 6, 10, 13, 17, 36, 48, 33, 39, 86, 100, 60, 68, 148, 166, 95, 105, 226, 248, 138, 150, 320, 346, 189, 203, 430, 460, 248, 264, 556, 590, 315, 333, 698, 736, 390, 410, 856, 898, 473, 495, 1030, 1076, 564, 588, 1220, 1270

Offset

1,1

Links

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

Prog

(PARI) a(n) = #vecsort(Vec(prod(i = 1, n, (1 + (-q)^i))), , 8) \\ David A. Corneth, Aug 29 2018

Crossrefs

Cf. A039822, A039828.

Sequence in context: A329703 A001611 A214448 * A143588 A284908 A329695

Adjacent sequences: A039826 A039827 A039828 * A039830 A039831 A039832

Keyword

nonn

Author

Olivier Gérard

Status

approved