A111650 - OEIS

A111650

2n appears n times (n>0).

2, 4, 4, 6, 6, 6, 8, 8, 8, 8, 10, 10, 10, 10, 10, 12, 12, 12, 12, 12, 12, 14, 14, 14, 14, 14, 14, 14, 16, 16, 16, 16, 16, 16, 16, 16, 18, 18, 18, 18, 18, 18, 18, 18, 18, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 24, 24, 24, 24, 24, 24, 24

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Seen as a triangle read by rows: T(n,k) = 2*n, 1<=k<=n. - Reinhard Zumkeller, Mar 18 2011

LINKS

Reinhard Zumkeller, Rows n = 1..128 of triangle, flattened

MATHEMATICA

Table[Table[2n, n], {n, 12}]//Flatten (* Harvey P. Dale, Apr 21 2018 *)

PROG

(Haskell)

a111650 n k = a111650_tabl !! (n-1) !! (k-1)