A390534 Index of first occurrence of n in A390514.

1, 5, 24, 82, 272, 471, 15041, 4746, 120178, 22165, 88117, 704941, 14506580, 2667568, 100764071, 108659164, 215236225, 8203821, 724278033, 213405375

Offset

0,2

Comments

Records appear to have fewer divisors than non records on average.

a(20) > 1601751700.

a(21) = 424858818, at (29150,12143).

Links

Table of n, a(n) for n=0..19.

Crossrefs

Cf. A390514, A000005.

Sequence in context: A101147 A274723 A006328 * A213766 A000347 A270906

Adjacent sequences: A390531 A390532 A390533 * A390535 A390536 A390537

Keyword

nonn,more

Author

Tamás Fülöp, Nov 09 2025

Status

approved