A038027 Least k such that A038025(k)=n-th composite number or 0 if none.

5, 184613, 67, 10, 11, 13, 127, 77, 33, 191, 187, 22, 23, 25, 26, 1337, 28, 3909, 504511, 37, 43, 57, 36, 4331, 39, 83, 441

Offset

1,1

Comments

If there is a k : A038025(k)=42 it is > 6670000.

Links

Table of n, a(n) for n=1..27.

Crossrefs

Sequence in context: A236066 A151589 A243114 * A237641 A057679 A123751

Adjacent sequences: A038024 A038025 A038026 * A038028 A038029 A038030

Keyword

nonn,hard

Author

Christian G. Bower with large values calculated by Fred W. Helenius (fredh(AT)ix.netcom.com).

Status

approved