A278479 a(n) is the smallest k such that the 2-adic valuation of A000041(k) equals n.

0, 2, 26, 11, 15, 70, 66, 109, 154, 478, 441, 96, 3693, 15005, 66934, 99420, 18978, 43002, 55943, 972190, 1151214, 2799146, 26801784, 46632889, 15519397, 122101417, 210553237, 289585489, 473093534

Offset: 0

Author

Joerg Arndt, Nov 23 2016

Keywords

• nonn
• more

Comments

a(n) is the smallest k such that A278478(k) = n.

Next term > 10^9.

Links

• Joerg Arndt, C++ program for this sequence

Crossrefs

Cf. A278478.