A099406 Decimal part of 1/a(n) starts with the n-th prime (leading zeros excluded).

4, 3, 2, 13, 9, 72, 56, 51, 42, 34, 32, 27, 24, 23, 21, 186, 167, 162, 148, 14, 136, 126, 12, 112, 103, 99, 97, 93, 91, 88, 782, 76, 725, 715, 67, 66, 633, 61, 596, 575, 556, 55, 521, 516, 506, 501, 472, 447, 44, 435, 428, 417, 414, 397, 388, 38, 371, 368, 36, 355, 353

Offset: 1

Author

Gil Broussard, Nov 17 2004

Keywords

• easy
• nonn
• base

Examples

			a(1)= 4 -> 1/4 =0.{2}500000...
a(2)= 3 -> 1/3 =0.{3}333333...
a(3)= 2 -> 1/2 =0.{5}000000...
a(4)=13 -> 1/13=0.0{7}69230...
a(100)=1846 -> 1/1846=0.000{541}712 and 541 is the 100th prime.
		

Crossrefs

Cf. A034057, A052039.

Formula

a(n) = A052039(prime(n)). - Michel Marcus, Jan 08 2025