0,1

The sequence is ordered first on the common power of 2, then on size of the number. More entries can be found in the reference.

Mariano Garcia, New Amicable Pairs of Euler's First Form with Greatest Common Factor a Prime Times a Power of 2, Nieuw Arch. Wisk 17(1999), pp. 25-27

Table of n, a(n) for n=0..9.

Cf. A049023, A049024, A049026.

Sequence in context: A253854 A237675 A135430 * A322679 A322689 A234080

Adjacent sequences: A049022 A049023 A049024 * A049026 A049027 A049028

nonn

Floor van Lamoen

approved