A364890 Least number k such that A060778(k) = n.

1, 2, 49, 14, 80, 44, 529983, 104, 16640, 2511, 8212890624, 735, 1019423412224, 29888, 600624, 2295, 54020648488730624, 6075, 3018417549254328320, 5264, 123200, 24151040, 3264402128528250685620224, 5984, 1753599375, 689278976, 2310399, 156735, 27965083137654166225393025024, 180224, 11404289746101879774056466612224, 21735, 170853262335, 2035980763136, 207593229375, 223244

Offset

1,2

Links

Table of n, a(n) for n=1..36.

Prog

(PARI) a(n) = my(x=1, nx=1, ny=2); while(gcd(nx, ny) != n, x++; nx=ny; ny=numdiv(x+1)); x;

Crossrefs

Cf. A000005, A058074, A060778, A084307, A364903.

Sequence in context: A100540 A007861 A296142 * A280189 A280188 A058845

Adjacent sequences: A364887 A364888 A364889 * A364891 A364892 A364893

Keyword

nonn

Author

Seiichi Manyama, Aug 12 2023

Extensions

a(11),a(13),a(17),a(19),a(23)-a(36) from Max Alekseyev, Feb 18 2024

Status

approved