A177868 - OEIS

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A177868

a(n) = number of 2-digit primes with digit sum n, where n runs through the non-multiples of 3 in the range [2..17].

4

1, 2, 2, 2, 3, 3, 3, 1, 1, 2, 1

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OFFSET

1,2

LINKS

Table of n, a(n) for n = 1..11

BigPrimes.net, Digit sums of primes

EXAMPLE

Digital sums of 2-digit primes

Sum count

2 1

4 2

5 2

7 2

8 3

10 3

11 3

13 1

14 1

16 2

17 1

CROSSREFS

For 2- through 9-digit primes the counts are in A177868, A178183, A178447, A178571, A178605, A178876, A178879, A178884.

Cf. 2nd row of A178701.

Sequence in context: A368460 A350679 A071451 * A178701 A181611 A064740

Adjacent sequences: A177865 A177866 A177867 * A177869 A177870 A177871

KEYWORD

nonn,base,fini,full

AUTHOR

N. J. A. Sloane, Dec 28 2010

STATUS

approved