A373334 a(n) is the least prime power (A246655) P such that P-n is the next smaller prime power below P.

3, 7, 16, 23, 37, 59, 1031, 97, 521, 149, 536870923, 211, 144115188075855872, 307, 65536, 1847, 8209, 1087, 147573952589676412928, 907, 524309, 1151, 549755813911, 4201, 17179869209, 2503, 16411, 2999, 131101, 1361, 34359738368, 5623, 18014398509481984, 8501, 33554467, 9587

Offset

1,1

Comments

If powers of primes (A000961) were used instead of A246655, a(1) would be 2.

Links

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

Formula

a(n) = A290515(n) + n for n > 1.

Crossrefs

Cf. A246655, A057820, A110968, A290515, A000961.

Sequence in context: A190890 A116040 A218276 * A221025 A036666 A218359

Adjacent sequences: A373331 A373332 A373333 * A373335 A373336 A373337

Keyword

nonn

Author

Hugo Pfoertner, Jun 16 2024

Status

approved