A227481 Number of squares in row n of the triangle in A069011.

1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 3, 1, 1, 2, 2, 1, 1, 1, 2, 2, 1, 1, 4, 1, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 3, 1, 1, 1, 3, 1, 2, 1, 2, 3, 1, 1, 4, 1, 1, 1, 2, 1, 1, 2, 3, 1, 1, 1, 5, 1, 1, 3, 2, 1, 1, 1, 2, 1, 2, 1, 5, 1, 1, 2, 2, 2, 1, 1, 4, 1, 1, 1, 5, 1

Offset

0,5

Comments

a(A074235(n)) = 1; a(A009023(n)) > 1.

Links

Reinhard Zumkeller, Table of n, a(n) for n = 0..1000

Formula

a(n) = sum(A010052(A069011(n,k)): k=0..n).

Prog

(Haskell)
a227481 = sum . map a010052 . a069011_row

Crossrefs

Sequence in context: A353693 A327857 A363850 * A143654 A170981 A161096

Adjacent sequences: A227478 A227479 A227480 * A227482 A227483 A227484

Keyword

nonn

Author

Reinhard Zumkeller, Oct 11 2013

Status

approved