M. Michael Somos, <a href="/A010815/a010815.txt">Introduction to Ramanujan theta functions</a>
M. Michael Somos, <a href="/A010815/a010815.txt">Introduction to Ramanujan theta functions</a>
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a(n) is the number of partitions of n in which each odd part can occur any number of times but each even part is of two kinds and each kind can occur at most twiceonce. - Michael Somos, Dec 01 2019
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a(n) is the number of partitions of n in which each odd part can occur any number of times but each even part can occur at most twice. - Michael Somos, Dec 01 2019
Euler transform of period 4 sequence [ 1, 2, 1, 0, ...].
G.f.: Product_{k>=1} (1 + x^(2*k))^2 / (1 - x^(2*k-1)). - Michael Somos, Dec 01 2019
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M. Somos, <a href="http://somos.crg4.comA010815/multiqa010815.htmltxt
G. C. Greubel, <a href="/A098613/b098613_1.txt">Table of n, a(n) for n = 0..1000</a>
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