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
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