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A122412 Indices of primes occurring in A031133. 6
1, 2, 3, 8, 15, 23, 29, 46, 188, 216, 326, 367, 738, 1183, 1662, 2224, 2225, 3384, 3385, 4058, 5948, 14356, 30802, 31544, 33608, 104070, 118504, 325851, 597310, 1319944, 2324139, 4140008, 4258994, 5911613, 8040877, 17567976, 23163297, 25203779 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Jon Schoenfield, Table of n, a(n) for n = 1..52

FORMULA

a(n) = pi(A031133(n))

EXAMPLE

a(4)=8 because the 4th term of A031133 is the 8th prime number.

CROSSREFS

Cf. A031131, A031132, A031133, A031134, A122413.

Sequence in context: A069752 A004731 A135354 * A174019 A128035 A003473

Adjacent sequences:  A122409 A122410 A122411 * A122413 A122414 A122415

KEYWORD

nonn

AUTHOR

Jon E. Schoenfield (jonscho(AT)hiwaay.net), Sep 02 2006

STATUS

approved

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Last modified May 18 11:13 EDT 2013. Contains 225419 sequences.