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 A264616 Irregular triangle read by rows: T(n,k) = number of unsigned unichromosonal genomes with n genes at 4-break distance k from a fixed genome, 0 <= k <= floor((n+1)/3). 3
 1, 1, 0, 1, 1, 1, 5, 1, 15, 8, 1, 35, 84, 1, 70, 649, 1, 126, 3585, 1328, 1, 210, 14949, 25160, 1, 330, 50421, 312128, 1, 495, 144903, 2621465, 861936, 1, 715, 367983, 16015637, 23532464, 1, 1001, 847275, 76717355, 401435968, 1, 1365, 1801943, 304775471, 4519766436, 1400675584 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,7 LINKS N. Alexeev, A. Pologova, M. A. Alekseyev, Generalized Hultman Numbers and Cycle Structures of Breakpoint Graphs, Journal of Computational Biology 24:2 (2017), 93-105. doi:10.1089/cmb.2016.0190 arXiv:1503.05285 EXAMPLE Triangle begins: 1, 1,0, 1,1, 1,5, 1,15,8, 1,35,84, 1,70,649, 1,126,3585,1328, 1,210,14949,25160, ... CROSSREFS Cf. A164652, A189507, A264614, A264615, A264617. Sequence in context: A039807 A213590 A185263 * A157395 A157385 A157397 Adjacent sequences:  A264613 A264614 A264615 * A264617 A264618 A264619 KEYWORD nonn,tabf AUTHOR N. J. A. Sloane, Nov 28 2015 EXTENSIONS Extended and offset corrected by Max Alekseyev, Feb 13 2018 STATUS approved

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Last modified September 25 11:05 EDT 2018. Contains 315389 sequences. (Running on oeis4.)