OFFSET
0,3
COMMENTS
a(n) = length of row n in triangle A242614.
LINKS
Jens Kruse Andersen, Table of n, a(n) for n = 0..100
PROG
(Haskell)
a242622 = length . a242614_row
(PARI) \\ c[x, y] = #numbers < 10^x with digit sum y-1.
m=50; c=matrix(m, m+1); for(x=1, m, for(y=1, m+1, c[x, y]=sum(d=0, min(9, y-1), if(x>1, c[x-1, y-d], d==y-1)))); for(n=0, m, print1(1+sum(i=2, n, c[i-1, i+1])", ")); \\ Jens Kruse Andersen, Jul 17 2014
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Reinhard Zumkeller, Jul 16 2014
EXTENSIONS
More terms from Jens Kruse Andersen, Jul 17 2014
STATUS
approved