cp's OEIS Frontend

A337972 Triangular array read by rows: T(n,k) = A337946(n) + A337946(k), for 1 <= k <= n.

%I A337972 #17 Oct 09 2020 17:20:17
%S A337972 2,4,6,8,10,14,13,15,19,24,23,25,29,34,44,31,33,37,42,52,60,48,50,54,
%T A337972 59,69,77,94,62,64,68,73,83,91,108,122,86,88,92,97,107,115,132,146,
%U A337972 170,114,116,120,125,135,143,160,174,198,226,127,129,133,138,148,156,173,187,211,239,252
%N A337972 Triangular array read by rows: T(n,k) = A337946(n) + A337946(k), for 1 <= k <= n.
%C A337972 This sequence, A337947, and A337974 partition the positive integers.
%H A337972 Peter Kagey, <a href="/A337972/b337972.txt">Table of n, a(n) for n = 1..10011</a> (first 141 rows, flattened)
%e A337972 Addition table for A337946 begins:
%e A337972   +  |  1  3  7 12  22  30  47  61  85
%e A337972 -----+--------------------------------
%e A337972    1 |  2
%e A337972    3 |  4  6
%e A337972    7 |  8 10 14
%e A337972   12 | 13 15 19 24
%e A337972   22 | 23 25 29 34  44
%e A337972   30 | 31 33 37 42  52  60
%e A337972   47 | 48 50 54 59  69  77  94
%e A337972   61 | 62 64 68 73  83  91 108 122
%e A337972   85 | 86 88 92 97 107 115 132 146 170
%Y A337972 Cf. A337659, A337946, A338014, A338031.
%Y A337972 Cf. A337973 (read by antidiagonals), A337974 (multiplication table).
%K A337972 nonn,tabl
%O A337972 1,1
%A A337972 _Peter Kagey_, Oct 05 2020