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 A002768 Number of bipartite partitions. (Formerly M3831 N1571) 0
 5, 13, 30, 59, 109, 187, 312, 497, 775, 1176, 1753, 2561, 3694, 5245, 7366, 10223, 14056, 19137, 25853, 34637, 46092, 60910, 80009, 104462, 135674, 175274 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 REFERENCES M. S. Cheema and H. Gupta, Tables of Partitions of Gaussian Integers. National Institute of Sciences of India, Mathematical Tables, Vol. 1, New Delhi, 1956, p. 32. N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). LINKS Table of n, a(n) for n=0..25. M. S. Cheema and H. Gupta, Tables of Partitions of Gaussian Integers. National Institute of Sciences of India, Mathematical Tables, Vol. 1, New Delhi, 1956. (Annotated scanned pages from, plus a review) MAPLE nmax := 20: gf := (n, m, k) -> 1/(product(product(1-x^r*y^t, t=k..m), r=0..n) * product(1-x^s, s=1..n)): seq(coeff(coeff(series(series(gf(nmax, 15, 5), x, nmax+1), y, 16), y, 15), x, n), n=0..nmax); # Sean A. Irvine, Aug 15 2014 CROSSREFS Sequence in context: A085555 A224888 A256314 * A354292 A086522 A234372 Adjacent sequences: A002765 A002766 A002767 * A002769 A002770 A002771 KEYWORD nonn AUTHOR N. J. A. Sloane STATUS approved

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Last modified February 24 17:27 EST 2024. Contains 370307 sequences. (Running on oeis4.)