A178183 a(n) = number of 3-digit primes with digit sum n, where n runs through the non-multiples of 3 in the range [2..26].

1, 2, 4, 7, 7, 12, 13, 16, 16, 13, 18, 12, 11, 6, 4, 1, 0

Offset

1,2

Links

Table of n, a(n) for n=1..17.

BigPrimes.net, Digit sums of primes

Example

Digit-sums of 3-digit primes
Sum     count
2       1
4       2
5       4
7       7
8       7
10      12
11      13
13      16
14      16
16      13
17      18
19      12
20      11
22      6
23      4
25      1
26      0

Crossrefs

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

Cf. 3rd row of A178701.

Sequence in context: A109359 A025087 A291810 * A010759 A370799 A063034

Adjacent sequences: A178180 A178181 A178182 * A178184 A178185 A178186

Keyword

nonn,base,fini,full

Author

N. J. A. Sloane, Dec 28 2010

Status

approved