A106146 Semiprimes (mod 10).

4, 6, 9, 0, 4, 5, 1, 2, 5, 6, 3, 4, 5, 8, 9, 6, 9, 1, 5, 7, 8, 2, 5, 9, 4, 7, 2, 5, 6, 7, 1, 3, 4, 5, 6, 1, 5, 8, 9, 1, 2, 3, 9, 3, 4, 1, 2, 3, 5, 6, 5, 8, 9, 1, 6, 9, 7, 8, 3, 5, 7, 4, 1, 2, 3, 5, 6, 9, 3, 4, 5, 7, 8, 9, 1, 6, 5, 7, 7, 9, 3, 4, 9, 2, 5, 7, 4, 8, 7, 9, 1, 5, 8, 9, 1, 2, 3, 5, 9, 4, 9, 1, 3, 6, 7

Offset: 1

Author

Shyam Sunder Gupta, May 07 2005

Keywords

• nonn

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A001358.

Cf. A239634 (initial digits).

Programs

Haskell

a106146 = flip mod 10 . a001358  -- Reinhard Zumkeller, Mar 23 2014

Mathematica

Mod[#,10]&/@Select[Range[500],PrimeOmega[#]==2&] (* Harvey P. Dale, Apr 04 2013 *)