A383294 Positions of prime powers (A246655) in EKG-sequence.

2, 3, 5, 6, 8, 10, 14, 17, 20, 22, 24, 28, 31, 33, 37, 43, 50, 57, 61, 64, 67, 74, 76, 81, 89, 100, 107, 112, 115, 122, 124, 128, 134, 138, 151, 160, 167, 171, 182, 189, 197, 203, 207, 216, 232, 236, 240, 253, 259, 264, 279, 287, 290, 297, 305, 314, 319, 328, 336, 344, 359, 363, 371, 377, 381, 401, 420, 430, 438, 444

Offset: 1

Author

Antti Karttunen, Apr 22 2025

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 1..20000
• Index entries for sequences related to EKG sequence.

Crossrefs

Positions of terms > 1 in A383293.

Disjoint union of A064955 and A383295.

Cf. A064413, A246655.

Programs

PARI

isA383294(n) = { my(x=A064413(n)); (isprime(x) || isprimepower(x)); };