login
A358531
Indices of the primes in A358530.
5
6, 8, 11, 13, 14, 18, 20, 21, 23, 26, 27, 29, 32, 34, 36, 39, 42, 44, 46, 49, 50, 53, 55, 58, 60, 61, 64, 65, 68, 70, 74, 76, 79, 82, 84, 86, 89, 90, 93, 94, 96, 99, 101, 103, 105, 108, 110, 113, 114, 116, 117, 121, 123, 127, 129, 130, 132, 134, 135, 137
OFFSET
1,1
COMMENTS
This sequence, together with A358529 and A356347, partition the set of positive integers >= 3.
FORMULA
a(n) = A258026(n) + 2.
EXAMPLE
n 1 2 3 4 5 6 7
k 6 8 11 13 14 18 20
p(n) 13 19 31 41 43 61 71
MATHEMATICA
t = Select[2 + Range[140],
Prime[#] - Prime[# - 1] < Prime[# - 1] - Prime[# - 2] &] (* A358531 *)
Prime[t] (* A358530 *)
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Nov 21 2022
STATUS
approved