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%I #12 Oct 09 2020 03:35:53
%S 0,1,2,3,4,6,7,8,10,14,12,13,15,19,24,20,21,23,27,32,40,30,31,33,37,
%T 42,50,60,44,45,47,51,56,64,74,88,65,66,68,72,77,85,95,109,130,91,92,
%U 94,98,103,111,121,135,156,182,107,108,110,114,119,127,137,151,172,198,214
%N Triangular array read by rows: T(n,k) = A337656(n) + A337656(k) for 1 <= k <= n.
%H Peter Kagey, <a href="/A338031/b338031.txt">Table of n, a(n) for n = 1..10011</a> (first 141 rows, flattened)
%e Addition table begins:
%e + | 0 1 3 7 12 20 30 44 65
%e -----+-----------------------------
%e 0 | 0
%e 1 | 1 2
%e 3 | 3 4 6
%e 7 | 7 8 10 14
%e 12 | 12 13 15 19 24
%e 20 | 20 21 23 27 32 40
%e 30 | 30 31 33 37 42 50 60
%e 44 | 44 45 47 51 56 64 74 88
%e 65 | 65 66 68 72 77 85 95 109 130
%Y Cf. A337656, A337657, A338032 (by antidiagonals), A338033 (multiplication).
%Y Cf. A337659, A337972, A338014.
%K nonn,tabl
%O 1,3
%A _Peter Kagey_, Oct 07 2020
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