A108353 For each nonnegative integer n, a(n) is the smallest positive integer j whose primal code characteristic is n, that is, the smallest j such that A108352(j) = n.

2, 1, 3, 20, 756, 178200

Offset

0,1

Comments

Suggested by Antti Karttunen.

Links

Table of n, a(n) for n=0..5.

J. Awbrey, Riffs and Rotes

Example

Writing (prime(i))^j as i:j, we have the following table:
Primal Functions and Functional Digraphs for a(0) to a(5)
` ` ` 2 = 1:1 ` ` ` ` ` ` || 1 -> 1 (infinite loop)
` ` ` 1 = { } ` ` ` ` ` ` || 1
` ` ` 3 = 2:1 ` ` ` ` ` ` || 2 -> 1
` ` `20 = 1:2 3:1 ` ` ` ` || 3 -> 1 -> 2
` ` 756 = 1:2 2:3 4:1 ` ` || 4 -> 1 -> 2 -> 3
`178200 = 1:3 2:4 3:2 5:1 || 5 -> 1 -> 3 -> 2 -> 4

Crossrefs

Cf. A106177, A108352, A108370, A108371, A108372, A108373, A108374, A111801.

Sequence in context: A319493 A372659 A340202 * A337894 A337892 A337891

Adjacent sequences: A108350 A108351 A108352 * A108354 A108355 A108356

Keyword

nonn

Author

Jon Awbrey, Jun 17 2005, extended Aug 20 2005

Status

approved