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A089390 For n > 1, a(n) is the least composite number not already used such that the n-th partial sum is prime. 1
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 (list; graph; refs; listen; history; text; internal format)
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 A261023

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

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Last modified October 16 05:52 EDT 2019. Contains 328045 sequences. (Running on oeis4.)