A048183 Least inverse of A048182.

2, 3, 4, 5, 7, 10, 11, 17, 22, 29, 41, 58, 67, 101, 131, 173, 259, 346, 461, 617, 787, 1037, 1571, 2074, 2767, 3703, 5357, 7403, 9427, 12443, 16663, 22217, 33323, 44437, 63677, 88843, 113117, 149323, 219803, 298597, 399883, 533237, 771403, 1018483

Offset

0,1

Comments

Also a(n) is the smallest integer that cannot be obtained by using the number 1 at most n+1 times and the operators +, -, *, /. - Koksal Karakus (karakusk(AT)hotmail.com), May 27 2002

Links

Table of n, a(n) for n=0..43.

Juris Cernenoks, Janis Iraids, Martins Opmanis, Rihards Opmanis, and Karlis Podnieks, Integer Complexity: Experimental and Analytical Results II, arxiv:1409.0446 [math.NT], 2014; see Table 2.

Index entries for similar sequences

Example

a(4)=7 because by using the number 1 at most five times we can write 1=1, 1+1=2, 1+1+1=3, 1+1+1+1+1=5, (1+1)*(1+1+1)=6 but we cannot obtain 7 in the same way.

Crossrefs

Cf. A005520, A060315, A181898.

Sequence in context: A265938 A182061 A005520 * A255641 A365093 A122975

Adjacent sequences: A048180 A048181 A048182 * A048184 A048185 A048186

Keyword

nonn

Author

David W. Wilson

Status

approved