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 A257255 Square array A(row,col) = A255545(row,col+1) - A255545(row,col): the first differences of each row of Lucky-Unlucky array. 4
 1, 2, 2, 2, 6, 12, 2, 6, 20, 18, 2, 6, 22, 30, 32, 2, 6, 20, 34, 52, 40, 2, 6, 22, 30, 50, 62, 64, 2, 6, 20, 32, 52, 64, 92, 84, 2, 6, 22, 30, 54, 62, 100, 116, 108, 2, 6, 20, 34, 48, 72, 92, 120, 156, 124, 2, 6, 22, 30, 50, 64, 102, 120, 152, 168, 138, 2, 6, 20, 32, 52, 62, 96, 124, 156, 168, 206, 170 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The array A(row,col) is read by downwards antidiagonals as A(1,1), A(1,2), A(2,1), A(1,3), A(2,2), A(3,1), ... LINKS FORMULA A(row,col) = A255545(row,col+1) - A255545(row,col). EXAMPLE The top left corner of the array:     1,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2     2,   6,   6,   6,   6,   6,   6,   6,   6,   6,   6,   6,   6,   6,   6    12,  20,  22,  20,  22,  20,  22,  20,  22,  20,  22,  20,  22,  20,  22    18,  30,  34,  30,  32,  30,  34,  30,  32,  30,  34,  30,  32,  30,  34    32,  52,  50,  52,  54,  48,  50,  52,  50,  54,  48,  54,  52,  48,  54    40,  62,  64,  62,  72,  64,  62,  64,  66,  62,  64,  62,  66,  64,  62    64,  92, 100,  92, 102,  96,  96,  94,  96,  96,  96,  96,  98,  94,  98    84, 116, 120, 120, 124, 116, 124, 116, 118, 122, 120, 118, 126, 120, 120   108, 156, 152, 156, 162, 148, 162, 152, 150, 160, 152, 154, 156, 156, 158   124, 168, 168, 174, 168, 164, 178, 170, 166, 174, 174, 168, 176, 162, 168   138, 206, 192, 198, 198, 190, 200, 202, 192, 200, 190, 198, 200, 192, 208   170, 232, 236, 238, 230, 244, 230, 240, 226, 242, 238, 234, 230, 246, 222   206, 270, 274, 278, 268, 272, 280, 278, 268, 276, 276, 282, 266, 270, 286   214, 284, 300, 286, 302, 288, 292, 288, 290, 294, 292, 290, 298, 284, 300   274, 366, 356, 390, 358, 372, 354, 374, 378, 360, 360, 376, 366, 372, 366   296, 384, 418, 392, 400, 396, 398, 390, 396, 402, 394, 402, 398, 400, 392   ... PROG (Scheme) (define (A257255 n) (A257255bi (A002260 n) (A004736 n))) (define (A257255bi row col) (- (A255545bi row (+ 1 col)) (A255545bi row col))) ;; Code for A255545bi given in A255545. CROSSREFS Column 1: A257256. Cf. A255545. Cf. also arrays A257251 and A257257. Sequence in context: A227847 A058756 A237614 * A248765 A007039 A025248 Adjacent sequences:  A257252 A257253 A257254 * A257256 A257257 A257258 KEYWORD nonn,tabl AUTHOR Antti Karttunen, Apr 19 2015 STATUS approved

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Last modified September 29 21:59 EDT 2020. Contains 337432 sequences. (Running on oeis4.)