A155893 Least positive integer such that a(n)! starts with n, both written in base 8.

1, 2, 4, 16, 13, 3, 46, 27, 7, 14, 6, 32, 10, 39, 5, 20, 86, 50, 11, 26, 121, 18, 38, 4, 31, 199, 34, 12, 139, 28, 63, 62, 61, 67, 60, 125, 59, 16, 37, 58, 47, 108, 23, 21, 41, 13, 112, 71, 194, 56, 25, 30, 302, 19, 166, 46, 55, 150, 83, 116, 219, 73, 90, 140, 164, 54, 207

Offset

1,2

Links

Table of n, a(n) for n=1..67.

Prog

(PARI) A155893(n)={ local( F=1, k=1 ); while( F\1!=n, F*=k++; while( F>=n+1, F/=8 )); k}

Crossrefs

Cf. A155891, A155892, A018799, A076219.

Sequence in context: A098819 A186008 A067846 * A196202 A135569 A370874

Adjacent sequences: A155890 A155891 A155892 * A155894 A155895 A155896

Keyword

base,nonn

Author

M. F. Hasler, Feb 01 2009

Status

approved