A031336 -id:A031336 - cp's OEIS frontend

A031340 a(n) = prime(7*n).

17, 43, 73, 107, 149, 181, 227, 263, 307, 349, 389, 433, 467, 521, 571, 613, 653, 701, 751, 809, 853, 887, 947, 997, 1039, 1091, 1129, 1193, 1237, 1291, 1327, 1423, 1453, 1493, 1553, 1601, 1637, 1699, 1753, 1811, 1873, 1931, 1993

Offset: 1

Jeff Burch

Jens Kruse Andersen, Table of n, a(n) for n = 1..10000

Cf. similar sequences listed in A031336.

[NthPrime(7*n): n in [1..50]]; // Vincenzo Librandi, Apr 10 2011

Maple
```
ithprime(7*n)
```

Prime[7*Range[50]] (* Harvey P. Dale, Nov 24 2011 *)

a(n)=prime(7*n) \\ Edward Jiang, Sep 08 2014

[nth_prime(7*n) for n in (1..50)] # Bruno Berselli, May 07 2014

A031341 a(n) = prime(8*n).

Original entry on oeis.org

19, 53, 89, 131, 173, 223, 263, 311, 359, 409, 457, 503, 569, 613, 659, 719, 769, 827, 881, 941, 997, 1049, 1097, 1163, 1223, 1283, 1321, 1423, 1459, 1511, 1571, 1619, 1693, 1747, 1811, 1877, 1949, 2003, 2069, 2129, 2203, 2267, 2311, 2377, 2423, 2503

Offset: 1

Jeff Burch

Jens Kruse Andersen, Table of n, a(n) for n = 1..10000

Cf. similar sequences listed in A031336.

[ NthPrime(8*n): n in [1..1000] ]; // Vincenzo Librandi, Apr 09 2011

Maple
```
ithprime(8*n)
```

Table[Prime[8n], {n, 1, 60}] (* Stefan Steinerberger, Apr 20 2006 *)

a(n)=prime(8*n) \\ Edward Jiang, Sep 08 2014

[nth_prime(8*n) for n in (1..50)] # Bruno Berselli, May 07 2014

More terms from Stefan Steinerberger, Apr 20 2006

A031342 a(n) = prime(9*n).

Original entry on oeis.org

23, 61, 103, 151, 197, 251, 307, 359, 419, 463, 523, 593, 643, 701, 761, 827, 883, 953, 1019, 1069, 1129, 1213, 1279, 1321, 1427, 1481, 1543, 1601, 1663, 1733, 1801, 1877, 1951, 2017, 2087, 2143, 2239, 2297, 2371, 2423, 2521, 2593

Offset: 1

Jeff Burch

nonn

Jens Kruse Andersen, Table of n, a(n) for n = 1..10000

Cf. similar sequences listed in A031336.

[NthPrime(9*n): n in [1..50]]; // Vincenzo Librandi, Apr 08 2011

Maple
```
ithprime(9*n)
```

Prime[9*Range[50]] (* Harvey P. Dale, Mar 17 2022 *)

a(n)=prime(9*n) \\ Edward Jiang, Sep 08 2014

[nth_prime(9*n) for n in (1..50)] # Bruno Berselli, May 07 2014

A112303 Permutation of primes generated by 3-rowed array shown below.

Original entry on oeis.org

2, 7, 3, 17, 11, 5, 29, 19, 13, 41, 31, 23, 53, 43, 37, 67, 59, 47, 79, 71, 61, 97, 83, 73, 107, 101, 89, 127, 109, 103, 139, 139, 131, 113, 157, 149, 137, 173, 163, 151, 191, 179, 167, 193, 181, 227, 211, 197, 239, 229, 223, 257, 263, 251

Offset: 1

Giovanni Teofilatto, Oct 17 2006, Nov 08 2006

7 17 29 41 53 67 79...(A031377)
11 19 31 43 59 71 83...(A031369)
13 23 37 47 61 73 89...(A031336)

Cf. A115302.

a(n) = A000040(a(p+3q) = a(p)+3q) with p and q positive integers.

a(n) = PrimePi(a(p+3q) = a(p)+3q) with p and q positive integers.

A275988 a(n) = prime(3n) - prime(n).

Original entry on oeis.org

3, 10, 18, 30, 36, 48, 56, 70, 80, 84, 106, 114, 126, 138, 150, 170, 174, 190, 202, 210, 234, 238, 264, 270, 282, 296, 316, 326, 340, 350, 360, 372, 386, 418, 422, 442, 450, 456, 476, 486, 498, 520, 536, 550, 564, 588, 600, 604, 626, 634, 650, 672, 696, 702, 720, 734, 750, 762, 774

Offset: 1

Terry D. Grant, Aug 15 2016

nonn

			For n=3, prime(3n) = 23, and prime(n) = 5, therefore a(3) = 23 - 5 = 18.

Cf. A000040, A031336, A072473.

Table[Prime[3n] - Prime[n], {n, 1, 100}]

a(n) = prime(3*n) - prime(n); \\ Michel Marcus, Aug 18 2016

a(n) = A031336(n) - A000040(n).

cp's OEIS Frontend

A031340 a(n) = prime(7*n).

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A031341 a(n) = prime(8*n).

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A031342 a(n) = prime(9*n).

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A112303 Permutation of primes generated by 3-rowed array shown below.

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A275988 a(n) = prime(3n) - prime(n).

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