OFFSET
1,2
COMMENTS
A109242 may be constructed using a similar pyramid algorithm:
....1..........a(1) = 1
...1 1.........a(2) = 111
..1 1 1........a(3) = 11211
.1 1 1 1.......a(4) = 1122211
EXAMPLE
...1................a(1) = 1
..2 2...............a(2) = 212
.3 3 3..............a(3) = 32423
4 4 4 4.............a(4) = 4364634
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Dave Durgin, Mar 19 2012
EXTENSIONS
Definition edited by N. J. A. Sloane, Jan 11 2020
STATUS
approved