A396400 Numbers k for which A395994(k)/k sets a new record.

1, 17, 19, 25, 31, 35, 41, 61, 77, 85, 91, 109, 113, 121, 127, 143, 197, 221, 257, 289, 533, 589, 667, 713, 817, 1073, 1081, 1189, 1247, 1271, 1363, 1403, 1891, 1927, 1961, 2117, 2201

Offset

1,2

Comments

Among the first 37 terms there are 10 primes, the last of which is a(19) = 257, and all other terms are semiprimes (except a(1) = 1).

Links

Table of n, a(n) for n=1..37.

Index entries for sequences related to Egyptian fractions.

Crossrefs

Subsequence of A396399.

Cf. A395994, A396401.

Sequence in context: A334287 A249566 A396399 * A205646 A281192 A073247

Adjacent sequences: A396397 A396398 A396399 * A396401 A396402 A396403

Keyword

nonn,more

Author

Pontus von Brömssen, May 24 2026

Status

approved