A338014 Triangular array read by rows: T(n,k) = A338012(n) + A338012(k) for 1 <= k <= n.

0, 3, 6, 4, 7, 8, 10, 13, 14, 20, 18, 21, 22, 28, 36, 23, 26, 27, 33, 41, 46, 34, 37, 38, 44, 52, 57, 68, 55, 58, 59, 65, 73, 78, 89, 110, 67, 70, 71, 77, 85, 90, 101, 122, 134, 93, 96, 97, 103, 111, 116, 127, 148, 160, 186, 95, 98, 99, 105, 113, 118, 129, 150, 162, 188, 190

Offset

1,2

Links

Peter Kagey, Table of n, a(n) for n = 1..10011 (first 141 rows, flattened)

Example

Addition table begins:
   + |  0  3  4 10 18 23  34  55  67
-----+-------------------------------
   0 |  0
   3 |  3  6
   4 |  4  7  8
  10 | 10 13 14 20
  18 | 18 21 22 28 36
  23 | 23 26 27 33 41 46
  34 | 34 37 38 44 52 57  68
  55 | 55 58 59 65 73 78  89 110
  67 | 67 70 71 77 85 90 101 122 134

Crossrefs

Cf. A338012, A338015 (by antidiagonals), A338016 (multiplication).

Cf. A337659, A337972.

Sequence in context: A011287 A090963 A112374 * A222409 A093064 A197568

Adjacent sequences: A338011 A338012 A338013 * A338015 A338016 A338017

Keyword

nonn,tabl

Author

Peter Kagey, Oct 06 2020

Status

approved