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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 (list; graph; refs; listen; history; text; internal format)
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: A194332 A322062 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

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Last modified December 7 09:33 EST 2019. Contains 329843 sequences. (Running on oeis4.)