A260895 Number of primes in n-th row of triangle A077664.

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

Offset: 1

Author

Reinhard Zumkeller, Aug 03 2015

Keywords

• nonn

Comments

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

Links

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

Crossrefs

Cf. A077664, A010051.

Programs

Haskell

a260895 = sum . map a010051' . a077664_row