cp's OEIS Frontend

A276943 Square array A(row,col) read by antidiagonals: A(1,col) = A276155(col), and for row > 1, A(row,col) = A276154(A(row-1,col)); Dispersion of primorial base left shift A276154 (array transposed).

%I A276943 #11 Sep 24 2016 10:48:21
%S A276943 1,3,2,4,8,6,5,12,36,30,7,14,60,240,210,9,32,66,420,2520,2310,10,38,
%T A276943 216,450,4620,32340,30030,11,42,246,2340,4830,60060,540540,510510,13,
%U A276943 44,270,2550,30240,62370,1021020,10210200,9699690,15,62,276,2730,32550,512820,1051050,19399380,232792560,223092870
%N A276943 Square array A(row,col) read by antidiagonals: A(1,col) = A276155(col), and for row > 1, A(row,col) = A276154(A(row-1,col)); Dispersion of primorial base left shift A276154 (array transposed).
%C A276943 The array A(row,col) is read by descending antidiagonals: A(1,1), A(1,2), A(2,1), A(1,3), A(2,2), A(3,1), etc.
%C A276943 Entries on row n are all multiples of A002110(n-1).
%H A276943 Antti Karttunen, <a href="/A276943/b276943.txt">Table of n, a(n) for n = 1..630; the first 35 antidiagonals of array</a>
%H A276943 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%H A276943 <a href="/index/Pri#primorialbase">Index entries for sequences related to primorial base</a>
%F A276943 A(1,col) = A276155(col); for row > 1, A(row,col) = A276154(A(row-1,col)).
%e A276943 The top left corner of the array:
%e A276943     1,    3,    4,    5,     7,     9,    10,    11,    13,    15,    16
%e A276943     2,    8,   12,   14,    32,    38,    42,    44,    62,    68,    72
%e A276943     6,   36,   60,   66,   216,   246,   270,   276,   426,   456,   480
%e A276943    30,  240,  420,  450,  2340,  2550,  2730,  2760,  4650,  4860,  5040
%e A276943   210, 2520, 4620, 4830, 30240, 32550, 34650, 34860, 60270, 62580, 64680
%o A276943 (Scheme)
%o A276943 (define (A276943 n) (A276943bi (A002260 n) (A004736 n)))
%o A276943 (define (A276943bi row col) (if (= 1 row) (A276155 col) (A276154 (A276943bi (- row 1) col))))
%Y A276943 Inverse permutation: A276944.
%Y A276943 Transpose: A276945.
%Y A276943 Column 1: A002110, Row 1: A276155.
%Y A276943 Cf. A276154.
%Y A276943 Cf. also array A276953.
%K A276943 nonn,base,tabl
%O A276943 1,2
%A A276943 _Antti Karttunen_, Sep 24 2016