A227838 2^a(n) is the highest power of 2 dividing A005132(n).

0, 0, 1, 1, 0, 0, 2, 2, 0, 0, 1, 1, 0, 0, 3, 3, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 4, 2, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 4, 2, 0, 0, 1, 1, 0, 0, 2, 5, 0, 0, 1, 1, 0, 0, 3, 2, 0, 0, 1, 1, 0, 0, 5, 2, 0, 0, 1, 1, 0, 0, 2, 3, 0, 0, 1, 1, 0, 0, 3, 2, 0, 0, 1, 1, 0, 0, 2, 5, 0, 0, 1, 1, 0, 0, 6, 2, 0, 0, 3, 4, 0, 0, 1, 1, 0

Offset: 1

Author

N. J. A. Sloane, Aug 04 2013

Keywords

• nonn

Comments

The 2-adic valuation of Recamán's sequence A005132.

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
• Index entries for sequences related to Recamán's sequence

Crossrefs

Cf. A005132, A227839, A007814.

Programs

Haskell

a227838 = a007814 . a005132  -- Reinhard Zumkeller, Aug 05 2013