A337975 - OEIS

%I #14 Oct 09 2020 17:18:59

%S 1,3,3,7,9,7,12,21,21,12,22,36,49,36,22,30,66,84,84,66,30,47,90,154,

%T 144,154,90,47,61,141,210,264,264,210,141,61,85,183,329,360,484,360,

%U 329,183,85,113,255,427,564,660,660,564,427,255,113,126,339,595,732,1034,900,1034,732,595,339,126

%N Multiplication table from A337946, read by antidiagonals.

%H Peter Kagey, <a href="/A337975/b337975.txt">Table of n, a(n) for n = 1..10011</a> (first 141 antidiagonals, flattened)

%e Multiplication table for A337946 begins:

%e   *  |  1   3   7   12   22   30   47   61   85

%e -----+-----------------------------------------

%e    1 |  1   3   7   12   22   30   47   61   85

%e    3 |  3   9  21   36   66   90  141  183  255

%e    7 |  7  21  49   84  154  210  329  427  595

%e   12 | 12  36  84  144  264  360  564  732 1020

%e   22 | 22  66 154  264  484  660 1034 1342 1870

%e   30 | 30  90 210  360  660  900 1410 1830 2550

%e   47 | 47 141 329  564 1034 1410 2209 2867 3995

%e   61 | 61 183 427  732 1342 1830 2867 3721 5185

%e   85 | 85 255 595 1020 1870 2550 3995 5185 7225

%Y Cf. A337662, A337946, A338017, A338034.

%Y Cf. A337973 (addition), A337974 (read by rows).

%K nonn,tabl

%O 1,2

%A _Peter Kagey_, Oct 05 2020