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 A265591 Number of 2Xn 0..2*n-1 arrays with upper left zero and lower right 2*n-1 and each element differing from its horizontal and antidiagonal neighbors by a power of two. 1
 1, 2, 84, 1354, 38791, 905458, 22977880, 517900514, 22987752597, 786599232404, 29092136543507, 913648420769831, 35187548561281832, 1167539263086885624, 39956736928795429167, 1306138963191078431958, 64687399192829411688656 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row 2 of A265590. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=4 ..0..2..6..7....0..1..5..4....0..2..6..7....0..2..6..7....0..1..5..3 ..6..2..6..7....3..1..5..7....3..4..6..7....0..4..5..7....5..4..5..7 CROSSREFS Cf. A265590. Sequence in context: A169601 A205643 A215263 * A348265 A157063 A288312 Adjacent sequences:  A265588 A265589 A265590 * A265592 A265593 A265594 KEYWORD nonn AUTHOR R. H. Hardin, Dec 10 2015 STATUS approved

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Last modified May 17 19:51 EDT 2022. Contains 353778 sequences. (Running on oeis4.)