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A081515 Sum of terms in n-th row of A081517. 2
1, 3, 7, 11, 17, 23, 29, 37, 47 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

a(n) is > the n-th triangular number. Conjecture: There are no composite members.

CROSSREFS

Cf. A081516, A081517.

Sequence in context: A023249 A090513 A191050 * A184856 A023234 A134707

Adjacent sequences:  A081512 A081513 A081514 * A081516 A081517 A081518

KEYWORD

nonn,more

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 27 2003

EXTENSIONS

a(7)-a(9) from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 23 2007

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Last modified February 17 02:08 EST 2012. Contains 205978 sequences.