cp's OEIS Frontend

A257255 Square array A(row,col) = A255545(row,col+1) - A255545(row,col): the first differences of each row of Lucky-Unlucky array.

%I A257255 #11 Apr 30 2015 21:44:45
%S A257255 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,
%T A257255 64,2,6,20,32,52,64,92,84,2,6,22,30,54,62,100,116,108,2,6,20,34,48,72,
%U A257255 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
%N A257255 Square array A(row,col) = A255545(row,col+1) - A255545(row,col): the first differences of each row of Lucky-Unlucky array.
%C A257255 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), ...
%H A257255 Antti Karttunen, <a href="/A257255/b257255.txt">Table of n, a(n) for n = 1..10440; the first 144 antidiagonals of the array</a>
%F A257255 A(row,col) = A255545(row,col+1) - A255545(row,col).
%e A257255 The top left corner of the array:
%e A257255     1,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2
%e A257255     2,   6,   6,   6,   6,   6,   6,   6,   6,   6,   6,   6,   6,   6,   6
%e A257255    12,  20,  22,  20,  22,  20,  22,  20,  22,  20,  22,  20,  22,  20,  22
%e A257255    18,  30,  34,  30,  32,  30,  34,  30,  32,  30,  34,  30,  32,  30,  34
%e A257255    32,  52,  50,  52,  54,  48,  50,  52,  50,  54,  48,  54,  52,  48,  54
%e A257255    40,  62,  64,  62,  72,  64,  62,  64,  66,  62,  64,  62,  66,  64,  62
%e A257255    64,  92, 100,  92, 102,  96,  96,  94,  96,  96,  96,  96,  98,  94,  98
%e A257255    84, 116, 120, 120, 124, 116, 124, 116, 118, 122, 120, 118, 126, 120, 120
%e A257255   108, 156, 152, 156, 162, 148, 162, 152, 150, 160, 152, 154, 156, 156, 158
%e A257255   124, 168, 168, 174, 168, 164, 178, 170, 166, 174, 174, 168, 176, 162, 168
%e A257255   138, 206, 192, 198, 198, 190, 200, 202, 192, 200, 190, 198, 200, 192, 208
%e A257255   170, 232, 236, 238, 230, 244, 230, 240, 226, 242, 238, 234, 230, 246, 222
%e A257255   206, 270, 274, 278, 268, 272, 280, 278, 268, 276, 276, 282, 266, 270, 286
%e A257255   214, 284, 300, 286, 302, 288, 292, 288, 290, 294, 292, 290, 298, 284, 300
%e A257255   274, 366, 356, 390, 358, 372, 354, 374, 378, 360, 360, 376, 366, 372, 366
%e A257255   296, 384, 418, 392, 400, 396, 398, 390, 396, 402, 394, 402, 398, 400, 392
%e A257255   ...
%o A257255 (Scheme)
%o A257255 (define (A257255 n) (A257255bi (A002260 n) (A004736 n)))
%o A257255 (define (A257255bi row col) (- (A255545bi row (+ 1 col)) (A255545bi row col))) ;; Code for A255545bi given in A255545.
%Y A257255 Column 1: A257256.
%Y A257255 Cf. A255545.
%Y A257255 Cf. also arrays A257251 and A257257.
%K A257255 nonn,tabl
%O A257255 1,2
%A A257255 _Antti Karttunen_, Apr 19 2015