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A260895 Number of primes in n-th row of triangle A077664. 2
1, 2, 2, 3, 2, 6, 2, 5, 4, 7, 4, 10, 3, 8, 8, 9, 4, 13, 4, 11, 8, 11, 6, 15, 7, 13, 10, 15, 7, 24, 7, 13, 12, 16, 12, 23, 9, 18, 14, 22, 10, 29, 9, 20, 17, 20, 9, 28, 12, 25, 17, 23, 12, 31, 15, 26, 18, 24, 13, 44, 12, 24, 21, 25, 18, 43, 13, 28, 21, 39, 14 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(n) = sum(A010051(A077664(n,k)): k = 1..n).

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..1000

PROG

(Haskell)

a260895 = sum . map a010051' . a077664_row

CROSSREFS

Cf. A077664, A010051.

Sequence in context: A068903 A329607 A108499 * A107753 A197929 A326849

Adjacent sequences:  A260892 A260893 A260894 * A260896 A260897 A260898

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Aug 03 2015

STATUS

approved

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Last modified July 13 04:01 EDT 2020. Contains 335673 sequences. (Running on oeis4.)