A248387 a(n) = index of n-th prime in A247665.

1, 2, 4, 5, 8, 9, 10, 11, 12, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 29, 30, 33, 34, 35, 36, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 48, 49, 51, 52, 53, 54, 56, 58, 59, 60, 61, 62, 64, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81

Offset

1,2

Links

Russ Cox and N. J. A. Sloane, Table of n, a(n) for n = 1..99436

Prog

(Haskell)
import Data.List (elemIndex); import Data.Maybe (fromJust)
a248387 = (+ 1) . fromJust . (`elemIndex` a247665_list) . a000040
-- Reinhard Zumkeller, Oct 16 2014

Crossrefs

Cf. A247665, A248388, A248379.

Subsequence of A248918.

Sequence in context: A123291 A351701 A099402 * A117070 A130048 A189633

Adjacent sequences: A248384 A248385 A248386 * A248388 A248389 A248390

Keyword

nonn

Author

Russ Cox and N. J. A. Sloane, Oct 16 2014

Status

approved