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A297495 Triangle T(n,k) (n>=0, 0<=k<=n) read by rows: use T(n,k)=T(n,k-1)+T(n-1,k-1) rule except left edge is the sequence read by rows, initial values are T(0,0)=T(1,0)=1. 5
1, 1, 2, 2, 3, 5, 2, 4, 7, 12, 3, 5, 9, 16, 28, 5, 8, 13, 22, 38, 66, 2, 7, 15, 28, 50, 88, 154, 4, 6, 13, 28, 56, 106, 194, 348, 7, 11, 17, 30, 58, 114, 220, 414, 762, 12, 19, 30, 47, 77, 135, 249, 469, 883, 1645, 3, 15, 34, 64, 111, 188, 323, 572, 1041, 1924 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Suggested by A297359.

LINKS

Lars Blomberg, Table of n, a(n) for n = 0..9869 (The first 140 rows)

EXAMPLE

Triangle begins:

1,

1,2,

2,3,5,

2,4,7,12,

3,5,9,16,28,

5,8,13,22,38,66,

2,7,15,28,50,88,154,

4,6,13,28,56,106,194,348,

7,11,17,30,58,114,220,414,762,

12,19,30,47,77,135,249,469,883,1645,

3,15,34,64,111,188,323,572,1041,1924,3569,

5,8,23,57,121,232,420,743,1315,2356,4280,7849,

9,14,22,45,102,223,455,875,1618,2933,5289,9569,17418,

16,25,39,61,106,208,431,886,1761,3379,6312,11601,21170,38588,

28,44,69,108,169,275,483,914,1800,3561,6940,13252,24853,46023,84611,

...,

CROSSREFS

Cf. A297359, A297496 (right edge), A297497, A297498, A297186 (row sums).

Sequence in context: A138117 A175908 A152430 * A117918 A302495 A185688

Adjacent sequences:  A297492 A297493 A297494 * A297496 A297497 A297498

KEYWORD

nonn,tabl

AUTHOR

N. J. A. Sloane, Dec 31 2017

EXTENSIONS

Terms a(21) and beyond from Lars Blomberg, Jan 01 2018

STATUS

approved

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Last modified February 28 23:15 EST 2020. Contains 332352 sequences. (Running on oeis4.)