A342835 a(n) is the number of divisors of A342834(n).

2, 2, 8, 16, 8, 4, 64, 4, 32, 8, 128, 64, 16, 64, 512, 8, 8, 64, 64

Offset: 1

Author

Bernard Schott, Mar 23 2021

Keywords

• nonn
• base
• hard
• more

Comments

a(21) = 96, a(63) = 4. - Chai Wah Wu, Mar 26 2021

Examples

			a(1) = a(2) = 2 because A342834(1) = 7 and A342834(2) = 797 are primes.
a(4) = 16 because A342834(4) = 7979979973 = 7 * 23 * 137 * 361789.
		

Crossrefs

Cf. A000005, A342834, A342836.

Formula

a(n) = A000005(A342834(n)).

Extensions

a(3)-a(11) from Michel Marcus, Mar 23 2021

a(12)-a(14) from Daniel Suteu, Mar 23 2021

a(15)-a(18) from Michael S. Branicky and Apurva Rai, Mar 26 2021

a(19) from Sean A. Irvine, May 01 2023