A089390 For n > 1, a(n) is the least composite number not already used such that the n-th partial sum is prime.

4, 9, 6, 10, 8, 16, 14, 12, 18, 30, 22, 24, 20, 34, 36, 44, 40, 26, 28, 32, 46, 42, 48, 38, 52, 50, 60, 54, 58, 56, 72, 78, 64, 62, 66, 82, 68, 70, 80, 84, 90, 94, 86, 96, 100, 74, 106, 102, 92, 76, 98, 112, 108, 104, 88, 114, 110, 120, 124, 116, 130, 126, 122, 150, 136

Offset

1,1

Comments

9 is the only odd member.

Links

Table of n, a(n) for n=1..65.

Crossrefs

Cf. A089391.

Sequence in context: A155875 A105274 A264264 * A053667 A218072 A335306

Adjacent sequences: A089387 A089388 A089389 * A089391 A089392 A089393

Keyword

easy,nonn

Author

Amarnath Murthy, Nov 10 2003

Extensions

More terms from David Wasserman, Sep 15 2005

Status

approved